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Full vulnerability report · 2026
CVE-2026-68431High confidence

ksmbd: validate minimum PDU size for transform requests

Linux · Linux

9.1CriticalCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 97 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.50% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Linux Linux and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 97 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

25 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 20 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

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.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.12.105-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.1.187-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinux-6.12Vendor fix publishedDebian records a fixed source-package version for this release.6.12.107-1~deb12u1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.7.1.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.7.1.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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 Ubuntu Security ↗Source updated 5 Oct 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-2026-68431 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: ksmbd: validate minimum PDU size for transform requests
77 known affected

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

  • kernel as a component of Red Hat Enterprise Linux 10
  • kernel-64k as a component of Red Hat Enterprise Linux 10
  • kernel-64k-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in ksmbd in the Linux kernel. When handling Server Message Block version 2 (SMB2) transform requests, the system fails to validate the minimum Protocol Data Unit (PDU) size. An unauthenticated remote attacker can send a specially crafted, short transform packet, bypassing security checks. This leads to the system reading beyond allocated memory and potentially disclosing sensitive information to the attacker.
Remediation
Affected
Optional official sources

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

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2026-57039

No EUVD known-exploited evidence

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2_PROTO_NUMBER. A packet carrying SMB2_TRANSFORM_PROTO_NUM bypasses the check even when the negotiated dialect does not provide transform handling. On an SMB 2.1 connection, a short transform packet therefore reaches init_smb2_rsp_hdr(), which interprets the request as a full SMB2 header and reads beyond the request allocation. The copied fields can then be returned to the unauthenticated client. Compression transforms are converted to ordinary SMB2 messages before protocol validation. After that conversion, validate ordinary SMB2 requests against SMB2_MIN_SUPPORTED_PDU_SIZE and require encryption transform requests to contain both a transform header and an SMB2 header. This rejects truncated requests before work allocation.

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
9.1 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 97 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2_PROTO_NUMBER. A packet carrying SMB2_TRANSFORM_PROTO_NUM bypasses the check even when the negotiated dialect does not provide transform handling. On an SMB 2.1 connection, a short transform packet therefore reaches init_smb2_rsp_hdr(), which interprets the request as a full SMB2 header and reads beyond the request allocation. The copied fields can then be returned to the unauthenticated client. Compression transforms are converted to ordinary SMB2 messages before protocol validation. After that conversion, validate ordinary SMB2 requests against SMB2_MIN_SUPPORTED_PDU_SIZE and require encryption transform requests to contain both a transform header and an SMB2 header. This rejects truncated requests before work allocation.

What

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2_PROTO_NUMBER. A packet carrying SMB2_TRANSFORM_PROTO_NUM bypasses the check even when the negotiated dialect does not provide transform handling. On an SMB 2.1 connection, a short transform packet therefore reaches init_smb2_rsp_hdr(), which interprets the request as a full SMB2 header and reads beyond the request allocation. The copied fields can then be returned to the unauthenticated client. Compression transforms are converted to ordinary SMB2 messages before protocol validation. After that conversion, validate ordinary SMB2 requests against SMB2_MIN_SUPPORTED_PDU_SIZE and require encryption transform requests to contain both a transform header and an SMB2 header. This rejects truncated requests before work allocation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

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: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2_PROTO_NUMBER. A packet carrying SMB2_TRANSFORM_PROTO_NUM bypasses the check even when the negotiated dialect does not provide transform handling. On an SMB 2.1 connection, a short transform packet therefore reaches init_smb2_rsp_hdr(), which interprets the request as a full SMB2 header and reads beyond the request allocation. The copied fields can then be returned to the unauthenticated client. Compression transforms are converted to ordinary SMB2 messages before protocol validation. After that conversion, validate ordinary SMB2 requests against SMB2_MIN_SUPPORTED_PDU_SIZE and require encryption transform requests to contain both a transform header and an SMB2 header. This rejects truncated requests before work allocation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

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 → vulnerable operation → 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.
CWE not yet assigned
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:H/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.CHighConfidentiality impact: A successful attack can cause a major loss.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.
NetworkUnauthenticated
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-57039Official EUVD mapping

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate minimum PDU size for transform requests The receive path applies the minimum SMB2 PDU size check only when ProtocolId is SMB2_PROTO_NUMBER. A packet carrying SMB2_TRANSFORM_PROTO_NUM bypasses the check even when the negotiated dialect does not provide transform handling. On an SMB 2.1 connection, a short transform packet therefore reaches init_smb2_rsp_hdr(), which interprets the request as a full SMB2 header and reads beyond the request allocation. The copied fields can then be returned to the unauthenticated client. Compression transforms are converted to ordinary SMB2 messages before protocol validation. After that conversion, validate ordinary SMB2 requests against SMB2_MIN_SUPPORTED_PDU_SIZE and require encryption transform requests to contain both a transform header and an SMB2 header. This rejects truncated requests before work allocation.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2799Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, darunter möglicherweise die Ausführung von beliebigem Code, die Offenlegung von Informationen, die Manipulation von Daten oder Denial-of-Service-Zustände.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260819Security Bulletin 19 Aug 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 19 Aug 2026, published on 19 August 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1232Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-68253 Référence CVE CVE-2026-68254 https://www.cve.org/CVERecord?id=CVE-2026-68254 Référence CVE CVE-2026-68264 https://www.cve.org/CVERecord?id=CVE-2026-68264 Référence CVE CVE-2026-68266 https://www.cve.org/CVERecord?id=CVE-2026-68266 Référence CVE CVE-2026-68267 https://www.cve.org/CVERecord?id=CVE-2026-68267 Référence CVE CVE-2026-68273 https://www.cve.org/CVERecord?id=CVE-2026-68273 Référence CVE CVE-2026-68276 https://www.cve.org/CVERecord?id=CVE-2026-68276 Référence CVE CVE-2026-68322 https://www.cve.org/CVERecord?id=CVE-2026-68322 Référence CVE CVE-2026-68367 https://www.cve.org/CVERecord?id=CVE-2026-68367 Référence CVE CVE-2026-68431 https://www.cve.org/CVERecord?id=CVE-2026-68431 Référence CVE CVE-2026-68451 https://www.cve.org/CVERecord?id=CVE-2026-68451 Référence CVE CVE-2026-68452 https://www.cve.org/CVERecord?id=CVE-2026-68452 Référence CVE CVE-2026-68480 https://www.cve.org/CVERecord?id=CVE-2026-68480 Référence CVE CVE-2026-72111 https://www.cve.org/CVERecord?id=CVE-2026-72111 Référence CVE CVE-2026-74440 https://www.cve.org/CVERecord?id=CVE-2026-74440 Référence CVE CVE-2026-74441 https://www.cve.org/CVERecord?id=CVE-2026-74441 Référence CVE CVE-2026-74442 https://www.cve.org/CVERecord?id=CVE-2026-74442 Référence CVE CVE-2026-74443 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1203Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-68213 Référence CVE CVE-2026-68228 https://www.cve.org/CVERecord?id=CVE-2026-68228 Référence CVE CVE-2026-68229 https://www.cve.org/CVERecord?id=CVE-2026-68229 Référence CVE CVE-2026-68300 https://www.cve.org/CVERecord?id=CVE-2026-68300 Référence CVE CVE-2026-68302 https://www.cve.org/CVERecord?id=CVE-2026-68302 Référence CVE CVE-2026-68343 https://www.cve.org/CVERecord?id=CVE-2026-68343 Référence CVE CVE-2026-68381 https://www.cve.org/CVERecord?id=CVE-2026-68381 Référence CVE CVE-2026-68388 https://www.cve.org/CVERecord?id=CVE-2026-68388 Référence CVE CVE-2026-68426 https://www.cve.org/CVERecord?id=CVE-2026-68426 Référence CVE CVE-2026-68431 https://www.cve.org/CVERecord?id=CVE-2026-68431 Référence CVE CVE-2026-68457 https://www.cve.org/CVERecord?id=CVE-2026-68457 Référence CVE CVE-2026-68459 https://www.cve.org/CVERecord?id=CVE-2026-68459 Référence CVE CVE-2026-68460 https://www.cve.org/CVERecord?id=CVE-2026-68460 Référence CVE CVE-2026-68461 https://www.cve.org/CVERecord?id=CVE-2026-68461 Référence CVE CVE-2026-68470 https://www.cve.org/CVERecord?id=CVE-2026-68470 Référence CVE CVE-2026-68476 https://www.cve.org/CVERecord?id=CVE-2026-68476 Référence CVE CVE-2026-68477 https://www.cve.org/CVERecord?id=CVE-2026-68477 Référence CVE CVE-2026-72014 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1163Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-68411 Référence CVE CVE-2026-68413 https://www.cve.org/CVERecord?id=CVE-2026-68413 Référence CVE CVE-2026-68414 https://www.cve.org/CVERecord?id=CVE-2026-68414 Référence CVE CVE-2026-68417 https://www.cve.org/CVERecord?id=CVE-2026-68417 Référence CVE CVE-2026-68422 https://www.cve.org/CVERecord?id=CVE-2026-68422 Référence CVE CVE-2026-68425 https://www.cve.org/CVERecord?id=CVE-2026-68425 Référence CVE CVE-2026-68427 https://www.cve.org/CVERecord?id=CVE-2026-68427 Référence CVE CVE-2026-68428 https://www.cve.org/CVERecord?id=CVE-2026-68428 Référence CVE CVE-2026-68430 https://www.cve.org/CVERecord?id=CVE-2026-68430 Référence CVE CVE-2026-68431 https://www.cve.org/CVERecord?id=CVE-2026-68431 Référence CVE CVE-2026-68432 https://www.cve.org/CVERecord?id=CVE-2026-68432 Référence CVE CVE-2026-68433 https://www.cve.org/CVERecord?id=CVE-2026-68433 Référence CVE CVE-2026-68434 https://www.cve.org/CVERecord?id=CVE-2026-68434 Référence CVE CVE-2026-68444 https://www.cve.org/CVERecord?id=CVE-2026-68444 Référence CVE CVE-2026-68446 https://www.cve.org/CVERecord?id=CVE-2026-68446 Référence CVE CVE-2026-68450 https://www.cve.org/CVERecord?id=CVE-2026-68450 Référence CVE CVE-2026-68451 https://www.cve.org/CVERecord?id=CVE-2026-68451 Référence CVE CVE-2026-68452 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1090Multiples vulnérabilités dans le noyau Linux de Debian

d?id=CVE-2026-68253 Référence CVE CVE-2026-68254 https://www.cve.org/CVERecord?id=CVE-2026-68254 Référence CVE CVE-2026-68264 https://www.cve.org/CVERecord?id=CVE-2026-68264 Référence CVE CVE-2026-68266 https://www.cve.org/CVERecord?id=CVE-2026-68266 Référence CVE CVE-2026-68267 https://www.cve.org/CVERecord?id=CVE-2026-68267 Référence CVE CVE-2026-68273 https://www.cve.org/CVERecord?id=CVE-2026-68273 Référence CVE CVE-2026-68276 https://www.cve.org/CVERecord?id=CVE-2026-68276 Référence CVE CVE-2026-68322 https://www.cve.org/CVERecord?id=CVE-2026-68322 Référence CVE CVE-2026-68367 https://www.cve.org/CVERecord?id=CVE-2026-68367 Référence CVE CVE-2026-68431 https://www.cve.org/CVERecord?id=CVE-2026-68431 Référence CVE CVE-2026-68451 https://www.cve.org/CVERecord?id=CVE-2026-68451 Référence CVE CVE-2026-68452 https://www.cve.org/CVERecord?id=CVE-2026-68452 Référence CVE CVE-2026-68480 https://www.cve.org/CVERecord?id=CVE-2026-68480 Référence CVE CVE-2026-72111 https://www.cve.org/CVERecord?id=CVE-2026-72111 Référence CVE CVE-2026-74440 https://www.cve.org/CVERecord?id=CVE-2026-74440 Référence CVE CVE-2026-74441 https://www.cve.org/CVERecord?id=CVE-2026-74441 Référence CVE CVE-2026-74442 https://www.cve.org/CVERecord?id=CVE-2026-74442 Référence CVE CVE-2026-74443 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.
Fix availability varies by product
Affected
Fixed
Linux: < 6.4, 5.15.217 ≤ 5.15.*, 6.1.184 ≤ 6.1.*, 6.6.153 ≤ 6.6.*, 6.12.105 ≤ 6.12.*, 6.18.46 ≤ 6.18.*, 7.1.6 ≤ 7.1.*, 7.2 ≤ *
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
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 12 Aug 2026 · Last source change 23 Aug 2026, 12:46 UTC · CWE not yet assigned

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-2026-57039
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceUnavailable
NVD statusNVD received

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: git.kernel.org/22f1aa35b87e471cc31b35b74451f46630863b12; removed remediation: git.kernel.org/b62c510f59803f82f9b4c76ead2a56833b2984c7.
    Before
    remediation: git.kernel.org/b62c510f59803f82f9b4c76ead2a56833b2984c7
    After
    remediation: git.kernel.org/22f1aa35b87e471cc31b35b74451f46630863b12
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    368ba06881c395f1c9a7ba22203cf8d78b4addc0 < b62c510f59803f82f9b4c76ead2a56833b2984c7; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < cfc0b8e5080aec87700774e8568765eaa4b7b92b; df3a4518aee64f21bcafa891105b468413f27431; 543c12c2644e772caa6880662c2a852cfdc5a10c; e9cb7be2fcbaee9e808b729e92948d38d52e5add; 5.15.145 < 5.16; 6.1.34 < 6.2; 6.3.8 < 6.4 · Fixed: < 6.4; 7.1.6 ≤ 7.1.*; 7.2 ≤ *
    After
    df3a4518aee64f21bcafa891105b468413f27431 < 22f1aa35b87e471cc31b35b74451f46630863b12; 543c12c2644e772caa6880662c2a852cfdc5a10c < 928dda88d0e13fbca381255028f65b244343a4ea; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < d8e5c5672724b8f3c4c099d2cf60239c996e5424; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < 32e486b70c256d5ef4baa5a2936ade2fea50e8eb; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < d9e9753dfd43bd27c956578df7804a3c90b80fdc; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < b62c510f59803f82f9b4c76ead2a56833b2984c7; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < cfc0b8e5080aec87700774e8568765eaa4b7b92b; e9cb7be2fcbaee9e808b729e92948d38d52e5add · Fixed: < 6.4; 5.15.217 ≤ 5.15.*; 6.1.184 ≤ 6.1.*; 6.6.153 ≤ 6.6.*; 6.12.105 ≤ 6.12.*; 6.18.46 ≤ 6.18.*; 7.1.6 ≤ 7.1.*; 7.2 ≤ *
    CNA ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    368ba06881c395f1c9a7ba22203cf8d78b4addc0 < b62c510f59803f82f9b4c76ead2a56833b2984c7; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < cfc0b8e5080aec87700774e8568765eaa4b7b92b; df3a4518aee64f21bcafa891105b468413f27431; 543c12c2644e772caa6880662c2a852cfdc5a10c; e9cb7be2fcbaee9e808b729e92948d38d52e5add; 5.15.145 < 5.16; 6.1.34 < 6.2; 6.3.8 < 6.4 · Fixed: < 6.4; 7.1.6 ≤ 7.1.*; 7.2-rc5 ≤ *
    After
    368ba06881c395f1c9a7ba22203cf8d78b4addc0 < b62c510f59803f82f9b4c76ead2a56833b2984c7; 368ba06881c395f1c9a7ba22203cf8d78b4addc0 < cfc0b8e5080aec87700774e8568765eaa4b7b92b; df3a4518aee64f21bcafa891105b468413f27431; 543c12c2644e772caa6880662c2a852cfdc5a10c; e9cb7be2fcbaee9e808b729e92948d38d52e5add; 5.15.145 < 5.16; 6.1.34 < 6.2; 6.3.8 < 6.4 · Fixed: < 6.4; 7.1.6 ≤ 7.1.*; 7.2 ≤ *
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-57039↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2026-68431 · cve.blacktree.nl