1. Ubuntu Security Notices
  2. USN-8817-3

USN-8817-3: Linux kernel (AWS) vulnerabilities

Publication date

30 September 2026

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-6.8 - Linux kernel for Amazon Web Services (AWS) systems

Details

It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • ARM64 architecture;
  • InfiniBand drivers;
  • Network drivers;
  • TCM subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • HSR network protocol;
  • IPv4 networking;
  • IPv6 networking;
  • Netfilter;
  • RDS protocol

It was discovered that some Arm processors could complete a broadcast
translation lookaside buffer (TLB) invalidation before memory writes made
through the invalidated translation were globally observed. A local
attacker could possibly use this to write to memory after permission to do
so had been revoked, bypassing memory protections or escalating privileges.
(CVE-2025-10263)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • ARM64 architecture;
  • InfiniBand drivers;
  • Network drivers;
  • TCM subsystem;
  • B.A.T.M.A.N. meshing protocol;
  • HSR network protocol;
  • IPv4 networking;
  • IPv6 networking;
  • Netfilter;
  • RDS protocol

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
24.04 LTS noble linux-image-6.8.0-1065-aws –  6.8.0-1065.68
linux-image-6.8.0-1065-aws-64k –  6.8.0-1065.68
linux-image-aws-6.8 –  6.8.0-1065.68
linux-image-aws-64k-6.8 –  6.8.0-1065.68
linux-image-aws-64k-lts-24.04 –  6.8.0-1065.68
linux-image-aws-lts-24.04 –  6.8.0-1065.68
22.04 LTS jammy linux-image-6.8.0-1065-aws –  6.8.0-1065.68~22.04.1
linux-image-6.8.0-1065-aws-64k –  6.8.0-1065.68~22.04.1
linux-image-aws –  6.8.0-1065.68~22.04.1
linux-image-aws-6.8 –  6.8.0-1065.68~22.04.1
linux-image-aws-64k –  6.8.0-1065.68~22.04.1
linux-image-aws-64k-6.8 –  6.8.0-1065.68~22.04.1

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References

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