Ubuntu alert USN-8817-3 (linux-aws, linux-aws-6.8)

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noreply+usn-bot--- via ubuntu-security-announce <ubuntu-security-announce@lists.ubuntu.com>
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[USN-8817-3] Linux kernel (AWS) vulnerabilities
Date:
             
 
Wed, 30 Sep 2026 14:29:31 +0000
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<E1xBvJL-0003rc-HQ@lists.ubuntu.com>
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noreply+usn-bot@canonical.com
==========================================================================
Ubuntu Security Notice USN-8817-3
September 30, 2026

linux-aws, linux-aws-6.8 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- 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so had been revoked, bypassing memory protections or escalating privileges.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;
(CVE-2026-53131, CVE-2026-53186, CVE-2026-53216, CVE-2026-53221,
CVE-2026-53354, CVE-2026-53355, CVE-2026-63886, CVE-2026-63887,
CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924,
CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994,
CVE-2026-64000, CVE-2026-64007, CVE-2026-64091)

Update instructions:

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

Ubuntu 24.04 LTS
  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

Ubuntu 22.04 LTS
  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

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

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.

References:
  https://ubuntu.com/security/notices/USN-8817-3
  https://ubuntu.com/security/notices/USN-8817-2
  https://ubuntu.com/security/notices/USN-8817-1
  CVE-2025-10263, CVE-2026-53131, CVE-2026-53186, CVE-2026-53216,
  CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-63886,
  CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922,
  CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993,
  CVE-2026-63994, CVE-2026-64000, CVE-2026-64007, CVE-2026-64091

Package Information:
  https://launchpad.net/ubuntu/+source/linux-aws/6.8.0-1065.68
  https://launchpad.net/ubuntu/+source/linux-aws-6.8/6.8.0-...


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