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CVE-2025-10263VulnerabilityPublished Updated

linux, linux-azure, linux-azure-6.8, linux-azure-fde, linux-azure-fde-6.8, linux-azure-fips, linux-fips, linux-gcp

Affects Linux kernelSource GCVE Database

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Authoritative record:CVE-2025-10263· Critical 9.1

Not known to be exploited · CVSS 9.1 Critical · fixed in 6.8.0-1068.76~22.04.1 : patch Linux kernel as a priority.

Data as of 6 Nov 2026, 14:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 6.8.0-1068.76~22.04.1, 6.8.0-1066.73~22.04.1, 6.8.0-1069.77~22.04.1 +17
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-142.142
Fixed in
  • 6.8.0-142.142
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1068.76
Fixed in
  • 6.8.0-1068.76
Ubuntu 24.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1066.73
Fixed in
  • 6.8.0-1066.73
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1069.77
Fixed in
  • 6.8.0-1069.77
Ubuntu 24.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1064.72
Fixed in
  • 6.8.0-1064.72
Ubuntu 24.04 LTSlinux-gkeoppkg:deb/ubuntu/linux-gkeop?arch=source&distro=nobleOther threatsAffected
  • <6.8.0-1050.54
Fixed in
  • 6.8.0-1050.54

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available and has been released in updated Linux kernel versions. Users should apply the security updates as provided by their Linux distribution, specifically upgrading to the fixed versions listed in the advisory. After updating, a system reboot is required to apply the changes. Note that due to ABI changes, third-party kernel modules may need recompilation and reinstallation. Follow the vendor advisory at https://ubuntu.com/security/notices/USN-8817-1 for detailed update instructions.

Description

Multiple security vulnerabilities were discovered in the Linux kernel, including a critical issue affecting some ARM processors where a broadcast TLB invalidation could complete before memory writes were globally observed. This flaw could allow a local attacker to write to memory after permissions were revoked, potentially bypassing memory protections or escalating privileges. Additional vulnerabilities affect various kernel subsystems such as InfiniBand drivers, network drivers, TCM subsystem, and several networking protocols. These issues have been addressed in updated Linux kernel versions.

References

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