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Full vulnerability report · 2026
CVE-2026-74743High confidence

macvlan: inherit needed_headroom and needed_tailroom from lowerdev

Linux · Linux

9.8CriticalCVSS 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 294 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 0.73% 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 294 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.7.1.10-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.7.1.10-1Debian 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.

2 current
CVE-2026-74743 · CSAF 2.0 · revision 10 · interimSUSE Product Security TeamCVE-2026-74743
185 known affected

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

  • kernel-default as component of SUSE Linux Enterprise Desktop 15 SP7
  • kernel-default-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • kernel-default-extra as component of SUSE Linux Enterprise Desktop 15 SP7
  • kernel-devel as component of SUSE Linux Enterprise Desktop 15 SP7
  • kernel-macros as component of SUSE Linux Enterprise Desktop 15 SP7
  • kernel-source as component of SUSE Linux Enterprise Desktop 15 SP7
  • cluster-md-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
  • dlm-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
  • gfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
  • kernel-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
  • kernel-source as component of SUSE Linux Enterprise High Availability Extension 15 SP7
  • ocfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7
Summary
In the Linux kernel, the following vulnerability has been resolved: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2026-74743 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: macvlan: inherit needed_headroom and needed_tailroom from lowerdev
260 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 the Linux kernel's macvlan component. The macvlan component incorrectly initializes network packet buffer (skb) headroom and tailroom values, failing to inherit them from the underlying network device. This can occur when the underlying device requires additional space for headers or trailers, such as with macsec or IPsec. This oversight can lead to memory corruption, specifically KASAN slab-use-after-free crashes, potentially resulting in a denial of service.
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-2026-66573

No EUVD known-exploited evidence

In the Linux kernel, the following vulnerability has been resolved: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.

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
9.8 · 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 294 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: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.

What

In the Linux kernel, the following vulnerability has been resolved: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.

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 disrupt the affected service.

What

In the Linux kernel, the following vulnerability has been resolved: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.

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 disrupt the affected service.

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 → disrupt the affected service
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:H/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.IHighIntegrity impact: A successful attack can cause a major loss.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.
NetworkUnauthenticatedDenial of service
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-66573Official EUVD mapping

In the Linux kernel, the following vulnerability has been resolved: macvlan: inherit needed_headroom and needed_tailroom from lowerdev macvlan devices inherit hard_header_len from lowerdev during macvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying lowerdev requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows, or KASAN slab-use-after-free crashes when dev_hard_header() / macvlan_hard_header() prepends header data or when lower devices append tailroom. Fix this by: 1. Inheriting needed_headroom and needed_tailroom from lowerdev in macvlan_init(). 2. Propagating needed_headroom and needed_tailroom updates to attached macvlans in macvlan_device_event() when receiving NETDEV_FEAT_CHANGE events.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3042Linux Kernel: Mehrere Schwachstellen

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

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260902Security Bulletin 2 Sept 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 2 Sept 2026, published on 2 September 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1255Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-74695 Référence CVE CVE-2026-74705 https://www.cve.org/CVERecord?id=CVE-2026-74705 Référence CVE CVE-2026-74712 https://www.cve.org/CVERecord?id=CVE-2026-74712 Référence CVE CVE-2026-74717 https://www.cve.org/CVERecord?id=CVE-2026-74717 Référence CVE CVE-2026-74719 https://www.cve.org/CVERecord?id=CVE-2026-74719 Référence CVE CVE-2026-74722 https://www.cve.org/CVERecord?id=CVE-2026-74722 Référence CVE CVE-2026-74723 https://www.cve.org/CVERecord?id=CVE-2026-74723 Référence CVE CVE-2026-74730 https://www.cve.org/CVERecord?id=CVE-2026-74730 Référence CVE CVE-2026-74737 https://www.cve.org/CVERecord?id=CVE-2026-74737 Référence CVE CVE-2026-74743 https://www.cve.org/CVERecord?id=CVE-2026-74743 Référence CVE CVE-2026-74744 https://www.cve.org/CVERecord?id=CVE-2026-74744 Référence CVE CVE-2026-80529 https://www.cve.org/CVERecord?id=CVE-2026-80529 Référence CVE CVE-2026-80530 https://www.cve.org/CVERecord?id=CVE-2026-80530 Référence CVE CVE-2026-80531 https://www.cve.org/CVERecord?id=CVE-2026-80531 Référence CVE CVE-2026-80533 https://www.cve.org/CVERecord?id=CVE-2026-80533 Référence CVE CVE-2026-80534 https://www.cve.org/CVERecord?id=CVE-2026-80534 Référence CVE CVE-2026-80535 https://www.cve.org/CVERecord?id=CVE-2026-80535 Référence CVE CVE-2026-80557 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2026-74725 Référence CVE CVE-2026-74726 https://www.cve.org/CVERecord?id=CVE-2026-74726 Référence CVE CVE-2026-74730 https://www.cve.org/CVERecord?id=CVE-2026-74730 Référence CVE CVE-2026-74732 https://www.cve.org/CVERecord?id=CVE-2026-74732 Référence CVE CVE-2026-74736 https://www.cve.org/CVERecord?id=CVE-2026-74736 Référence CVE CVE-2026-74737 https://www.cve.org/CVERecord?id=CVE-2026-74737 Référence CVE CVE-2026-74739 https://www.cve.org/CVERecord?id=CVE-2026-74739 Référence CVE CVE-2026-74740 https://www.cve.org/CVERecord?id=CVE-2026-74740 Référence CVE CVE-2026-74742 https://www.cve.org/CVERecord?id=CVE-2026-74742 Référence CVE CVE-2026-74743 https://www.cve.org/CVERecord?id=CVE-2026-74743 Référence CVE CVE-2026-74744 https://www.cve.org/CVERecord?id=CVE-2026-74744 Référence CVE CVE-2026-74746 https://www.cve.org/CVERecord?id=CVE-2026-74746 Référence CVE CVE-2026-74748 https://www.cve.org/CVERecord?id=CVE-2026-74748 Référence CVE CVE-2026-80522 https://www.cve.org/CVERecord?id=CVE-2026-80522 Référence CVE CVE-2026-80525 https://www.cve.org/CVERecord?id=CVE-2026-80525 Référence CVE CVE-2026-80526 https://www.cve.org/CVERecord?id=CVE-2026-80526 Référence CVE CVE-2026-80527 https://www.cve.org/CVERecord?id=CVE-2026-80527 Référence CVE CVE-2026-80528 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1231Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-74581 Référence CVE CVE-2026-74582 https://www.cve.org/CVERecord?id=CVE-2026-74582 Référence CVE CVE-2026-74584 https://www.cve.org/CVERecord?id=CVE-2026-74584 Référence CVE CVE-2026-74615 https://www.cve.org/CVERecord?id=CVE-2026-74615 Référence CVE CVE-2026-74616 https://www.cve.org/CVERecord?id=CVE-2026-74616 Référence CVE CVE-2026-74669 https://www.cve.org/CVERecord?id=CVE-2026-74669 Référence CVE CVE-2026-74673 https://www.cve.org/CVERecord?id=CVE-2026-74673 Référence CVE CVE-2026-74695 https://www.cve.org/CVERecord?id=CVE-2026-74695 Référence CVE CVE-2026-74705 https://www.cve.org/CVERecord?id=CVE-2026-74705 Référence CVE CVE-2026-74743 https://www.cve.org/CVERecord?id=CVE-2026-74743 Référence CVE CVE-2026-80534 https://www.cve.org/CVERecord?id=CVE-2026-80534 Référence CVE CVE-2026-80574 https://www.cve.org/CVERecord?id=CVE-2026-80574 Référence CVE CVE-2026-80580 https://www.cve.org/CVERecord?id=CVE-2026-80580 Référence CVE CVE-2026-80590 https://www.cve.org/CVERecord?id=CVE-2026-80590 Référence CVE CVE-2026-80603 https://www.cve.org/CVERecord?id=CVE-2026-80603 Référence CVE CVE-2026-80609 https://www.cve.org/CVERecord?id=CVE-2026-80609 Référence CVE CVE-2026-80714 https://www.cve.org/CVERecord?id=CVE-2026-80714 Référence CVE CVE-2026-80716 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-2026-74717 Référence CVE CVE-2026-74719 https://www.cve.org/CVERecord?id=CVE-2026-74719 Référence CVE CVE-2026-74720 https://www.cve.org/CVERecord?id=CVE-2026-74720 Référence CVE CVE-2026-74722 https://www.cve.org/CVERecord?id=CVE-2026-74722 Référence CVE CVE-2026-74724 https://www.cve.org/CVERecord?id=CVE-2026-74724 Référence CVE CVE-2026-74726 https://www.cve.org/CVERecord?id=CVE-2026-74726 Référence CVE CVE-2026-74730 https://www.cve.org/CVERecord?id=CVE-2026-74730 Référence CVE CVE-2026-74737 https://www.cve.org/CVERecord?id=CVE-2026-74737 Référence CVE CVE-2026-74739 https://www.cve.org/CVERecord?id=CVE-2026-74739 Référence CVE CVE-2026-74743 https://www.cve.org/CVERecord?id=CVE-2026-74743 Référence CVE CVE-2026-74744 https://www.cve.org/CVERecord?id=CVE-2026-74744 Référence CVE CVE-2026-74746 https://www.cve.org/CVERecord?id=CVE-2026-74746 Référence CVE CVE-2026-74748 https://www.cve.org/CVERecord?id=CVE-2026-74748 Référence CVE CVE-2026-80527 https://www.cve.org/CVERecord?id=CVE-2026-80527 Référence CVE CVE-2026-80528 https://www.cve.org/CVERecord?id=CVE-2026-80528 Référence CVE CVE-2026-80529 https://www.cve.org/CVERecord?id=CVE-2026-80529 Référence CVE CVE-2026-80534 https://www.cve.org/CVERecord?id=CVE-2026-80534 Référence CVE CVE-2026-80536 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: < 2.6.23, 5.10.271 ≤ 5.10.*, 5.15.222 ≤ 5.15.*, 6.1.184 ≤ 6.1.*, 6.6.153 ≤ 6.6.*, 6.12.105 ≤ 6.12.*, 6.18.46 ≤ 6.18.*, 7.1.10 ≤ 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 26 Aug 2026 · Last source change 3 Oct 2026, 10:56 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 2026-08-27
European sourceENISA EUVD · EUVD-2026-66573
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
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/c2ef3f134b069c54b9cc95cce1a16c38c4939336; removed remediation: git.kernel.org/8cd90e850e434577bf6774778657d26d6995e53f.
    Before
    remediation: git.kernel.org/8cd90e850e434577bf6774778657d26d6995e53f
    After
    remediation: git.kernel.org/c2ef3f134b069c54b9cc95cce1a16c38c4939336
    CNA ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 8cd90e850e434577bf6774778657d26d6995e53f; b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 28afc87bd8da0b3348bbbd834c8a89e83712cf5e; b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 8f6a05dbac05725e0786701eb04778c5bdbe4eaa; b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 96fa90b74385b7f2b0d97251dd43d5ee6ca44668; b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < bc9a00fb78e32bccc39d763bfd13a450705bac5d; b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < cef51860becd9700217c81732ca1eb1ea6ed6fe1; 2.6.23 · Fixed: < 2.6.23; 6.1.184 ≤ 6.1.*; 6.6.153 ≤ 6.6.*; 6.12.105 ≤ 6.12.*; 6.18.46 ≤ 6.18.*; 7.1.10 ≤ 7.1.*; 7.2 ≤ *
    After
    Linux: b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < c2ef3f134b069c54b9cc95cce1a16c38c4939336, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 7b0eb3e0f363ca79a3af9efd2e87c6258f11da2b, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 8cd90e850e434577bf6774778657d26d6995e53f, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 28afc87bd8da0b3348bbbd834c8a89e83712cf5e, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 8f6a05dbac05725e0786701eb04778c5bdbe4eaa, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < 96fa90b74385b7f2b0d97251dd43d5ee6ca44668, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < bc9a00fb78e32bccc39d763bfd13a450705bac5d, b863ceb7ddcea8c55fcf1d7b2ac591d50aa7ed53 < cef51860becd9700217c81732ca1eb1ea6ed6fe1, 2.6.23 · Fixed: Linux: < 2.6.23, 5.10.271 ≤ 5.10.*, 5.15.222 ≤ 5.15.*, 6.1.184 ≤ 6.1.*, 6.6.153 ≤ 6.6.*, 6.12.105 ≤ 6.12.*, 6.18.46 ≤ 6.18.*, 7.1.10 ≤ 7.1.*, 7.2 ≤ *
    CNA ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    kernel-default as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-default-devel as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-default-extra as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-devel as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-macros as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-source as component of SUSE Linux Enterprise Desktop 15 SP7; cluster-md-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; dlm-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; gfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-source as component of SUSE Linux Enterprise High Availability Extension 15 SP7; ocfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.0; kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.0; kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.1; kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.1; cluster-md-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; dlm-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; gfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-macros as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-source as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; ocfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; cluster-md-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; dlm-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; gfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; kernel-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5; and 153 more · Fixed: kernel-64kb-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-64kb-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-64kb-extra-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-azure-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-azure-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-azure-extra-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-azure-vdso-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-default-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-default-base-6.12.0-160000.38.1.160000.2.24 as component of SUSE Linux Enterprise Server 16.0; kernel-default-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-default-extra-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-default-livepatch-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-default-vdso-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-docs-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-docs-html-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-kvmsmall-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-kvmsmall-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-kvmsmall-vdso-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-macros-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-obs-qa-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-source-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-source-vanilla-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-syms-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; kernel-zfcpdump-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server 16.0; cluster-md-kmp-default-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0; dlm-kmp-default-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0; gfs2-kmp-default-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0; kernel-64kb-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0; kernel-64kb-devel-6.12.0-160000.38.1 as component of SUSE Linux Enterprise Server for SAP applications 16.0; and 38 more
    After
    kernel-default as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-default-devel as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-default-extra as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-devel as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-macros as component of SUSE Linux Enterprise Desktop 15 SP7; kernel-source as component of SUSE Linux Enterprise Desktop 15 SP7; cluster-md-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; dlm-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; gfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-source as component of SUSE Linux Enterprise High Availability Extension 15 SP7; ocfs2-kmp-default as component of SUSE Linux Enterprise High Availability Extension 15 SP7; kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.0; kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.0; kernel-default as component of SUSE Linux Enterprise High Availability Extension 16.1; kernel-source as component of SUSE Linux Enterprise High Availability Extension 16.1; cluster-md-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; dlm-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; gfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-macros as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; kernel-source as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; ocfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS; cluster-md-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; dlm-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; gfs2-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; kernel-default as component of SUSE Linux Enterprise High Performance Computing 15 SP5; kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP5; and 155 more
    SUSE Product Security Team ↗
  4. ENISA EUVD mappingEUVD-2026-66573 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-66573"}
    ENISA EUVD ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
  6. SeveritySeverity changed from Unknown to Critical.
    Before
    Unknown
    After
    Critical
    CNA ↗
  7. CVSS scoreCVSS score changed from not recorded to 9.8 (CVSS 3.1 · CNA · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    9.8 (CVSS 3.1 · CNA · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
    CNA ↗
  8. Vendor guidanceAuthoritative vendor guidance changed: added remediation: git.kernel.org/8cd90e850e434577bf6774778657d26d6995e53f; removed remediation: git.kernel.org/28afc87bd8da0b3348bbbd834c8a89e83712cf5e.
    Before
    remediation: git.kernel.org/28afc87bd8da0b3348bbbd834c8a89e83712cf5e
    After
    remediation: git.kernel.org/8cd90e850e434577bf6774778657d26d6995e53f
    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-2026-66573↗Vendor CSAF · SUSE Product Security Team↗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-2026-74743 · cve.blacktree.nl