1. Ubuntu Security Notices
  2. USN-7159-2

USN-7159-2: Linux kernel (AWS) vulnerabilities

Publication date

17 December 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems

Details

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:

  • ARM32 architecture;
  • ARM64 architecture;
  • S390 architecture;
  • x86 architecture;
  • Power management core;
  • GPU drivers;
  • InfiniBand drivers;
  • Network drivers;
  • S/390 drivers;
  • TTY drivers;
  • BTRFS file system;
  • EROFS file system;
  • F2FS file system;
  • File systems infrastructure;
  • BPF subsystem;
  • Socket messages infrastructure;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Networking core;
  • IPv4 networking;
  • SELinux security module

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:

  • ARM32 architecture;
  • ARM64 architecture;
  • S390 architecture;
  • x86 architecture;
  • Power management core;
  • GPU drivers;
  • InfiniBand drivers;
  • Network drivers;
  • S/390 drivers;
  • TTY drivers;
  • BTRFS file system;
  • EROFS file system;
  • F2FS file system;
  • File systems infrastructure;
  • BPF subsystem;
  • Socket messages infrastructure;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Networking core;
  • IPv4 networking;
  • SELinux security module

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
20.04 focal linux-image-5.4.0-1136-aws –  5.4.0-1136.146
linux-image-aws-lts-20.04 –  5.4.0.1136.133
18.04 bionic linux-image-5.4.0-1136-aws –  5.4.0-1136.146~18.04.1  
linux-image-aws –  5.4.0.1136.146~18.04.1  

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References

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