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Full vulnerability report · 2026
CVE-2026-53391High confidence

NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr

Linux · Linux

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

20 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-fdeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-tegraAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-xilinxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 8 Sept 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-53391 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr
50 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • bpftool as a component of Red Hat Enterprise Linux 7
  • kernel as a component of Red Hat Enterprise Linux 7
  • kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7
  • kernel-bootwrapper as a component of Red Hat Enterprise Linux 7
  • kernel-debug as a component of Red Hat Enterprise Linux 7
  • kernel-debug-devel as a component of Red Hat Enterprise Linux 7
  • kernel-devel as a component of Red Hat Enterprise Linux 7
  • kernel-doc as a component of Red Hat Enterprise Linux 7
  • kernel-headers as a component of Red Hat Enterprise Linux 7
  • kernel-kdump as a component of Red Hat Enterprise Linux 7
  • kernel-kdump-devel as a component of Red Hat Enterprise Linux 7
  • kernel-rt as a component of Red Hat Enterprise Linux 7
Summary
A flaw was found in the Linux kernel's NFSv4/pNFS implementation. The `nfs4_decode_mp_ds_addr` function, responsible for decoding network address information, does not properly handle zero-length `r_addr` opaque data. A malicious or compromised metadata server can exploit this by providing a zero-length `r_addr`, leading to a NULL pointer dereference and causing the client system to panic, resulting in a Denial of Service (DoS).
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-45513

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr nfs4_decode_mp_ds_addr() decodes the r_netid and r_addr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchr(buf, '.') to locate the port separator. Both decodes use xdr_stream_decode_string_dup(), and the current code checks only "nlen < 0" / "rlen < 0" before dereferencing the returned string. When the on-wire opaque has length zero, xdr_stream_decode_opaque_inline() returns 0 and xdr_stream_decode_string_dup() falls through to its "*str = NULL; return ret" tail, leaving buf NULL with a return value of 0. The "< 0" check does not catch this, and the next line is strrchr(NULL, '.'), a kernel NULL pointer dereference reachable from any pNFS-flexfile client mounted against a malicious or compromised metadata server. Reject the zero-length cases explicitly so the decoder fails with -EBADMSG (treated as a malformed GETDEVICEINFO body) instead of panicking the client.

What

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr nfs4_decode_mp_ds_addr() decodes the r_netid and r_addr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchr(buf, '.') to locate the port separator. Both decodes use xdr_stream_decode_string_dup(), and the current code checks only "nlen < 0" / "rlen < 0" before dereferencing the returned string. When the on-wire opaque has length zero, xdr_stream_decode_opaque_inline() returns 0 and xdr_stream_decode_string_dup() falls through to its "*str = NULL; return ret" tail, leaving buf NULL with a return value of 0. The "< 0" check does not catch this, and the next line is strrchr(NULL, '.'), a kernel NULL pointer dereference reachable from any pNFS-flexfile client mounted against a malicious or compromised metadata server. Reject the zero-length cases explicitly so the decoder fails with -EBADMSG (treated as a malformed GETDEVICEINFO body) instead of panicking the client.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr nfs4_decode_mp_ds_addr() decodes the r_netid and r_addr opaques of a netaddr4 from a GETDEVICEINFO multipath-DS body, then immediately calls strrchr(buf, '.') to locate the port separator. Both decodes use xdr_stream_decode_string_dup(), and the current code checks only "nlen < 0" / "rlen < 0" before dereferencing the returned string. When the on-wire opaque has length zero, xdr_stream_decode_opaque_inline() returns 0 and xdr_stream_decode_string_dup() falls through to its "*str = NULL; return ret" tail, leaving buf NULL with a return value of 0. The "< 0" check does not catch this, and the next line is strrchr(NULL, '.'), a kernel NULL pointer dereference reachable from any pNFS-flexfile client mounted against a malicious or compromised metadata server. Reject the zero-length cases explicitly so the decoder fails with -EBADMSG (treated as a malformed GETDEVICEINFO body) instead of panicking the client.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → NULL Pointer Dereference → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-476

CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-476
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2026-2403Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, möglicherweise Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder vertrauliche Informationen offenzulegen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1118Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2026-53006 Référence CVE CVE-2026-53026 https://www.cve.org/CVERecord?id=CVE-2026-53026 Référence CVE CVE-2026-53053 https://www.cve.org/CVERecord?id=CVE-2026-53053 Référence CVE CVE-2026-53059 https://www.cve.org/CVERecord?id=CVE-2026-53059 Référence CVE CVE-2026-53153 https://www.cve.org/CVERecord?id=CVE-2026-53153 Référence CVE CVE-2026-53185 https://www.cve.org/CVERecord?id=CVE-2026-53185 Référence CVE CVE-2026-53189 https://www.cve.org/CVERecord?id=CVE-2026-53189 Référence CVE CVE-2026-53196 https://www.cve.org/CVERecord?id=CVE-2026-53196 Référence CVE CVE-2026-53361 https://www.cve.org/CVERecord?id=CVE-2026-53361 Référence CVE CVE-2026-53391 https://www.cve.org/CVERecord?id=CVE-2026-53391 Référence CVE CVE-2026-53392 https://www.cve.org/CVERecord?id=CVE-2026-53392 Référence CVE CVE-2026-53397 https://www.cve.org/CVERecord?id=CVE-2026-53397 Référence CVE CVE-2026-53399 https://www.cve.org/CVERecord?id=CVE-2026-53399 Référence CVE CVE-2026-63800 https://www.cve.org/CVERecord?id=CVE-2026-63800 Référence CVE CVE-2026-64002 https://www.cve.org/CVERecord?id=CVE-2026-64002 Référence CVE CVE-2026-64018 https://www.cve.org/CVERecord?id=CVE-2026-64018 Référence CVE CVE-2026-64136 https://www.cve.org/CVERecord?id=CVE-2026-64136 Référence CVE CVE-2026-64189 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1091Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-53359 Référence CVE CVE-2026-53369 https://www.cve.org/CVERecord?id=CVE-2026-53369 Référence CVE CVE-2026-53374 https://www.cve.org/CVERecord?id=CVE-2026-53374 Référence CVE CVE-2026-53375 https://www.cve.org/CVERecord?id=CVE-2026-53375 Référence CVE CVE-2026-53376 https://www.cve.org/CVERecord?id=CVE-2026-53376 Référence CVE CVE-2026-53379 https://www.cve.org/CVERecord?id=CVE-2026-53379 Référence CVE CVE-2026-53382 https://www.cve.org/CVERecord?id=CVE-2026-53382 Référence CVE CVE-2026-53385 https://www.cve.org/CVERecord?id=CVE-2026-53385 Référence CVE CVE-2026-53388 https://www.cve.org/CVERecord?id=CVE-2026-53388 Référence CVE CVE-2026-53391 https://www.cve.org/CVERecord?id=CVE-2026-53391 Référence CVE CVE-2026-53392 https://www.cve.org/CVERecord?id=CVE-2026-53392 Référence CVE CVE-2026-53393 https://www.cve.org/CVERecord?id=CVE-2026-53393 Référence CVE CVE-2026-53397 https://www.cve.org/CVERecord?id=CVE-2026-53397 Référence CVE CVE-2026-53398 https://www.cve.org/CVERecord?id=CVE-2026-53398 Référence CVE CVE-2026-53399 https://www.cve.org/CVERecord?id=CVE-2026-53399 Référence CVE CVE-2026-53402 https://www.cve.org/CVERecord?id=CVE-2026-53402 Référence CVE CVE-2026-53403 https://www.cve.org/CVERecord?id=CVE-2026-53403 Référence CVE CVE-2026-63794 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1064Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-53375 Référence CVE CVE-2026-53376 https://www.cve.org/CVERecord?id=CVE-2026-53376 Référence CVE CVE-2026-53379 https://www.cve.org/CVERecord?id=CVE-2026-53379 Référence CVE CVE-2026-53381 https://www.cve.org/CVERecord?id=CVE-2026-53381 Référence CVE CVE-2026-53382 https://www.cve.org/CVERecord?id=CVE-2026-53382 Référence CVE CVE-2026-53385 https://www.cve.org/CVERecord?id=CVE-2026-53385 Référence CVE CVE-2026-53386 https://www.cve.org/CVERecord?id=CVE-2026-53386 Référence CVE CVE-2026-53387 https://www.cve.org/CVERecord?id=CVE-2026-53387 Référence CVE CVE-2026-53388 https://www.cve.org/CVERecord?id=CVE-2026-53388 Référence CVE CVE-2026-53391 https://www.cve.org/CVERecord?id=CVE-2026-53391 Référence CVE CVE-2026-53392 https://www.cve.org/CVERecord?id=CVE-2026-53392 Référence CVE CVE-2026-53393 https://www.cve.org/CVERecord?id=CVE-2026-53393 Référence CVE CVE-2026-53394 https://www.cve.org/CVERecord?id=CVE-2026-53394 Référence CVE CVE-2026-53397 https://www.cve.org/CVERecord?id=CVE-2026-53397 Référence CVE CVE-2026-53398 https://www.cve.org/CVERecord?id=CVE-2026-53398 Référence CVE CVE-2026-53399 https://www.cve.org/CVERecord?id=CVE-2026-53399 Référence CVE CVE-2026-53400 https://www.cve.org/CVERecord?id=CVE-2026-53400 Référence CVE CVE-2026-53402 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-1029Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-53355 Référence CVE CVE-2026-53357 https://www.cve.org/CVERecord?id=CVE-2026-53357 Référence CVE CVE-2026-53359 https://www.cve.org/CVERecord?id=CVE-2026-53359 Référence CVE CVE-2026-53366 https://www.cve.org/CVERecord?id=CVE-2026-53366 Référence CVE CVE-2026-53369 https://www.cve.org/CVERecord?id=CVE-2026-53369 Référence CVE CVE-2026-53374 https://www.cve.org/CVERecord?id=CVE-2026-53374 Référence CVE CVE-2026-53375 https://www.cve.org/CVERecord?id=CVE-2026-53375 Référence CVE CVE-2026-53376 https://www.cve.org/CVERecord?id=CVE-2026-53376 Référence CVE CVE-2026-53388 https://www.cve.org/CVERecord?id=CVE-2026-53388 Référence CVE CVE-2026-53391 https://www.cve.org/CVERecord?id=CVE-2026-53391 Référence CVE CVE-2026-53392 https://www.cve.org/CVERecord?id=CVE-2026-53392 Référence CVE CVE-2026-53397 https://www.cve.org/CVERecord?id=CVE-2026-53397 Référence CVE CVE-2026-53399 https://www.cve.org/CVERecord?id=CVE-2026-53399 Référence CVE CVE-2026-53402 https://www.cve.org/CVERecord?id=CVE-2026-53402 Référence CVE CVE-2026-63794 https://www.cve.org/CVERecord?id=CVE-2026-63794 Référence CVE CVE-2026-63802 https://www.cve.org/CVERecord?id=CVE-2026-63802 Référence CVE CVE-2026-63806 https://www.cve.org/CVERecord?id=CVE-2026-63806 Référence CVE CVE-2026-63807 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0957Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-53362 Référence CVE CVE-2026-53366 https://www.cve.org/CVERecord?id=CVE-2026-53366 Référence CVE CVE-2026-53381 https://www.cve.org/CVERecord?id=CVE-2026-53381 Référence CVE CVE-2026-53382 https://www.cve.org/CVERecord?id=CVE-2026-53382 Référence CVE CVE-2026-53383 https://www.cve.org/CVERecord?id=CVE-2026-53383 Référence CVE CVE-2026-53384 https://www.cve.org/CVERecord?id=CVE-2026-53384 Référence CVE CVE-2026-53385 https://www.cve.org/CVERecord?id=CVE-2026-53385 Référence CVE CVE-2026-53388 https://www.cve.org/CVERecord?id=CVE-2026-53388 Référence CVE CVE-2026-53390 https://www.cve.org/CVERecord?id=CVE-2026-53390 Référence CVE CVE-2026-53391 https://www.cve.org/CVERecord?id=CVE-2026-53391 Référence CVE CVE-2026-53397 https://www.cve.org/CVERecord?id=CVE-2026-53397 Référence CVE CVE-2026-53398 https://www.cve.org/CVERecord?id=CVE-2026-53398 Référence CVE CVE-2026-53403 https://www.cve.org/CVERecord?id=CVE-2026-53403 Référence CVE CVE-2026-63794 https://www.cve.org/CVERecord?id=CVE-2026-63794 Référence CVE CVE-2026-63795 https://www.cve.org/CVERecord?id=CVE-2026-63795 Référence CVE CVE-2026-63796 https://www.cve.org/CVERecord?id=CVE-2026-63796 Référence CVE CVE-2026-63798 https://www.cve.org/CVERecord?id=CVE-2026-63798 Référence CVE CVE-2026-63800 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
bpftool as a component of Red Hat Enterprise Linux 7; kernel as a component of Red Hat Enterprise Linux 7; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7; kernel-bootwrapper as a component of Red Hat Enterprise Linux 7; kernel-debug as a component of Red Hat Enterprise Linux 7; kernel-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-devel as a component of Red Hat Enterprise Linux 7; kernel-doc as a component of Red Hat Enterprise Linux 7; kernel-headers as a component of Red Hat Enterprise Linux 7; kernel-kdump as a component of Red Hat Enterprise Linux 7; kernel-kdump-devel as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 7; kernel-rt-debug as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-doc as a component of Red Hat Enterprise Linux 7; kernel-rt-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-trace as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt.src as a component of Red Hat Enterprise Linux 7; kernel-tools as a component of Red Hat Enterprise Linux 7; kernel-tools-libs as a component of Red Hat Enterprise Linux 7; kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7; kernel.src as a component of Red Hat Enterprise Linux 7; perf as a component of Red Hat Enterprise Linux 7; python-perf as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 9; kernel-rt-core as a component of Red Hat Enterprise Linux 9; and 20 more
Fixed
kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-aarch64-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-ppc64le-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-s390x-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-x86_64-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 732 more
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 19 Jul 2026 · Last source change 17 Aug 2026, 04:50 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-45513
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceNIST NVD
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    bpftool as a component of Red Hat Enterprise Linux 7; kernel as a component of Red Hat Enterprise Linux 7; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7; kernel-bootwrapper as a component of Red Hat Enterprise Linux 7; kernel-debug as a component of Red Hat Enterprise Linux 7; kernel-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-devel as a component of Red Hat Enterprise Linux 7; kernel-doc as a component of Red Hat Enterprise Linux 7; kernel-headers as a component of Red Hat Enterprise Linux 7; kernel-kdump as a component of Red Hat Enterprise Linux 7; kernel-kdump-devel as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 7; kernel-rt-debug as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-doc as a component of Red Hat Enterprise Linux 7; kernel-rt-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-trace as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt.src as a component of Red Hat Enterprise Linux 7; kernel-tools as a component of Red Hat Enterprise Linux 7; kernel-tools-libs as a component of Red Hat Enterprise Linux 7; kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7; kernel.src as a component of Red Hat Enterprise Linux 7; perf as a component of Red Hat Enterprise Linux 7; python-perf as a component of Red Hat Enterprise Linux 7; bpftool as a component of Red Hat Enterprise Linux 9; kernel as a component of Red Hat Enterprise Linux 9; and 106 more · Fixed: kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-aarch64-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-ppc64le-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-s390x-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-x86_64-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 429 more
    After
    bpftool as a component of Red Hat Enterprise Linux 7; kernel as a component of Red Hat Enterprise Linux 7; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7; kernel-bootwrapper as a component of Red Hat Enterprise Linux 7; kernel-debug as a component of Red Hat Enterprise Linux 7; kernel-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-devel as a component of Red Hat Enterprise Linux 7; kernel-doc as a component of Red Hat Enterprise Linux 7; kernel-headers as a component of Red Hat Enterprise Linux 7; kernel-kdump as a component of Red Hat Enterprise Linux 7; kernel-kdump-devel as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 7; kernel-rt-debug as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-doc as a component of Red Hat Enterprise Linux 7; kernel-rt-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-trace as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt.src as a component of Red Hat Enterprise Linux 7; kernel-tools as a component of Red Hat Enterprise Linux 7; kernel-tools-libs as a component of Red Hat Enterprise Linux 7; kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7; kernel.src as a component of Red Hat Enterprise Linux 7; perf as a component of Red Hat Enterprise Linux 7; python-perf as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 9; kernel-rt-core as a component of Red Hat Enterprise Linux 9; and 20 more · Fixed: kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-aarch64-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-ppc64le-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-s390x-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-x86_64-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 732 more
    Red Hat Product Security
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    bpftool as a component of Red Hat Enterprise Linux 7; kernel as a component of Red Hat Enterprise Linux 7; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7; kernel-bootwrapper as a component of Red Hat Enterprise Linux 7; kernel-debug as a component of Red Hat Enterprise Linux 7; kernel-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-devel as a component of Red Hat Enterprise Linux 7; kernel-doc as a component of Red Hat Enterprise Linux 7; kernel-headers as a component of Red Hat Enterprise Linux 7; kernel-kdump as a component of Red Hat Enterprise Linux 7; kernel-kdump-devel as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 7; kernel-rt-debug as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-doc as a component of Red Hat Enterprise Linux 7; kernel-rt-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-trace as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt.src as a component of Red Hat Enterprise Linux 7; kernel-tools as a component of Red Hat Enterprise Linux 7; kernel-tools-libs as a component of Red Hat Enterprise Linux 7; kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7; kernel.src as a component of Red Hat Enterprise Linux 7; perf as a component of Red Hat Enterprise Linux 7; python-perf as a component of Red Hat Enterprise Linux 7; bpftool as a component of Red Hat Enterprise Linux 8; kernel as a component of Red Hat Enterprise Linux 8; and 154 more · Fixed: kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-aarch64-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-ppc64le-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-s390x-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-x86_64-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 279 more
    After
    bpftool as a component of Red Hat Enterprise Linux 7; kernel as a component of Red Hat Enterprise Linux 7; kernel-abi-whitelists as a component of Red Hat Enterprise Linux 7; kernel-bootwrapper as a component of Red Hat Enterprise Linux 7; kernel-debug as a component of Red Hat Enterprise Linux 7; kernel-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-devel as a component of Red Hat Enterprise Linux 7; kernel-doc as a component of Red Hat Enterprise Linux 7; kernel-headers as a component of Red Hat Enterprise Linux 7; kernel-kdump as a component of Red Hat Enterprise Linux 7; kernel-kdump-devel as a component of Red Hat Enterprise Linux 7; kernel-rt as a component of Red Hat Enterprise Linux 7; kernel-rt-debug as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-debug-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-doc as a component of Red Hat Enterprise Linux 7; kernel-rt-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt-trace as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-devel as a component of Red Hat Enterprise Linux 7; kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7; kernel-rt.src as a component of Red Hat Enterprise Linux 7; kernel-tools as a component of Red Hat Enterprise Linux 7; kernel-tools-libs as a component of Red Hat Enterprise Linux 7; kernel-tools-libs-devel as a component of Red Hat Enterprise Linux 7; kernel.src as a component of Red Hat Enterprise Linux 7; perf as a component of Red Hat Enterprise Linux 7; python-perf as a component of Red Hat Enterprise Linux 7; bpftool as a component of Red Hat Enterprise Linux 9; kernel as a component of Red Hat Enterprise Linux 9; and 106 more · Fixed: kernel-64k-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-64k-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debug-devel-matched-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-aarch64-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-ppc64le-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-s390x-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-debuginfo-common-x86_64-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); kernel-devel-0:6.12.0-211.50.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 429 more
    Red Hat Product Security
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    6b7f3cf96364eaf597940cb5c68a682894829915 < 76b94cbd32aacf36a641956385a852635c6802b9; 6b7f3cf96364eaf597940cb5c68a682894829915 < c8e4e0c701d0192a2efb6df059c0f9e19678c23d; 6b7f3cf96364eaf597940cb5c68a682894829915 < 6c344fff2feff9d4d716d8e4ad40e9b5040ee5ea; 6b7f3cf96364eaf597940cb5c68a682894829915 < 427ab81a811dab4bca9d19f82eec5847ae42646e; 6b7f3cf96364eaf597940cb5c68a682894829915 < 012d37a568bfbb2c9686f03ade75560bc7139956; 6b7f3cf96364eaf597940cb5c68a682894829915 < 30aae62e50b4e074a90a9a5e15246548fbdc1182; 6b7f3cf96364eaf597940cb5c68a682894829915 < 41fe0f7b84f0cb822ae10ab08592996a592b2a25; 4.0 · Fixed: < 4.0; 5.15.211 ≤ 5.15.*; 6.1.177 ≤ 6.1.*; 6.6.144 ≤ 6.6.*; 6.12.95 ≤ 6.12.*; 6.18.38 ≤ 6.18.*; 7.1.3 ≤ 7.1.*; 7.2-rc1 ≤ *
    After
    6b7f3cf96364eaf597940cb5c68a682894829915 < 76b94cbd32aacf36a641956385a852635c6802b9; 6b7f3cf96364eaf597940cb5c68a682894829915 < c8e4e0c701d0192a2efb6df059c0f9e19678c23d; 6b7f3cf96364eaf597940cb5c68a682894829915 < 6c344fff2feff9d4d716d8e4ad40e9b5040ee5ea; 6b7f3cf96364eaf597940cb5c68a682894829915 < 427ab81a811dab4bca9d19f82eec5847ae42646e; 6b7f3cf96364eaf597940cb5c68a682894829915 < 012d37a568bfbb2c9686f03ade75560bc7139956; 6b7f3cf96364eaf597940cb5c68a682894829915 < 30aae62e50b4e074a90a9a5e15246548fbdc1182; 6b7f3cf96364eaf597940cb5c68a682894829915 < 41fe0f7b84f0cb822ae10ab08592996a592b2a25; 4.0 · Fixed: < 4.0; 5.15.211 ≤ 5.15.*; 6.1.177 ≤ 6.1.*; 6.6.144 ≤ 6.6.*; 6.12.95 ≤ 6.12.*; 6.18.38 ≤ 6.18.*; 7.1.3 ≤ 7.1.*; 7.2 ≤ *
    CNA
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-53391 · cve.blacktree.nl