Security Advisory Desk
unratedQCS priority 70/100Ubuntu

USN-8629-2: Linux kernel (AWS) vulnerabilities

Several security flaws were found in the Linux kernel used by Ubuntu, which could allow attackers to compromise the system. These problems affect multiple parts of the system, including network handling and hardware drivers. Updating the system with the provided fixes helps protect the computer from being attacked.

Published 17/8/2026, 4:43:06 pmVerified 17/8/2026, 5:30:16 pmRevision 1
Ubuntu unrated network security advisory visual

In plain language

What this advisory means

Several security flaws were found in the Linux kernel used by Ubuntu, which could allow attackers to compromise the system. These problems affect multiple parts of the system, including network handling and hardware drivers. Updating the system with the provided fixes helps protect the computer from being attacked.

Technical explanation

How the issue affects the environment

Multiple vulnerabilities were identified in the Linux kernel that impact various subsystems: x86 architecture, InfiniBand drivers, network drivers, traffic control, IPv4 and IPv6 networking, Netfilter, RxRPC session sockets, and the SCTP protocol. These flaws could potentially be exploited by attackers to compromise system integrity and security. The fix involves updating the Linux kernel to a new version which includes corrections for these issues. Because of an Application Binary Interface (ABI) change, users must reboot and recompile any third-party kernel modules post-update. This update is reflected in specific package versions for Ubuntu 24.04 LTS on AWS.

Operational impact

Why teams should care

Systems running vulnerable versions of the Linux kernel are at risk of compromise, which can lead to unauthorized access, data breaches, or service disruption. Organizations using Ubuntu on AWS should prioritize applying these updates to maintain system security and operational continuity. Failure to update may expose the environment to attackers exploiting these kernel vulnerabilities.

Immediate action

Update the Linux kernel packages to version 7.0.0-1010.10~24.04.1 or later for Ubuntu 24.04 LTS on AWS systems. After updating, reboot the system to apply changes. Recompile and reinstall all third-party kernel modules due to ABI changes in this update.

Affected and fixed releases

Affected versionsLinux kernel on Ubuntu 24.04 LTS AWS variant (versions prior to 7.0.0-1010.10~24.04.1)
Fixed versionslinux-image-7.0.0-1010-aws version 7.0.0-1010.10~24.04.1 and related packages for Ubuntu 24.04 LTS AWS

Temporary risk reduction

The official source does not specify any workaround if immediate updating is not possible. System reboot and module recompilation are necessary after applying updates.

Evidence and validation checklist

  • Ubuntu Security Notice USN-8629-2: https://ubuntu.com/security/notices/USN-8629-2
  • List of CVEs provided in the advisory
  • Package version and update instructions for Ubuntu 24.04 LTS AWS variant included in the advisory
  • Details on subsystems affected were listed in the advisory

Authoritative reference

Ubuntu Security Notices

QCS detected and normalized this record from the official source. Vendor guidance remains authoritative.

Open source
USN-8629-2: Linux kernel (AWS) vulnerabilities | Advisory | QCS