1. Ubuntu Security Notices
  2. USN-6951-4

USN-6951-4: Linux kernel (BlueField) vulnerabilities

Publication date

21 August 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

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:

  • ARM64 architecture;
  • M68K architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Accessibility subsystem;
  • Character device driver;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • Buffer Sharing and Synchronization framework;
  • FireWire subsystem;
  • GPU drivers;
  • HW tracing;
  • Macintosh device drivers;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • Pin controllers subsystem;
  • S/390 drivers;
  • SCSI drivers;
  • SoundWire subsystem;
  • Greybus lights staging drivers;
  • TTY drivers;
  • Framebuffer layer;
  • Virtio drivers;
  • 9P...

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;
  • M68K architecture;
  • User-Mode Linux (UML);
  • x86 architecture;
  • Accessibility subsystem;
  • Character device driver;
  • Clock framework and drivers;
  • CPU frequency scaling framework;
  • Hardware crypto device drivers;
  • Buffer Sharing and Synchronization framework;
  • FireWire subsystem;
  • GPU drivers;
  • HW tracing;
  • Macintosh device drivers;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • Pin controllers subsystem;
  • S/390 drivers;
  • SCSI drivers;
  • SoundWire subsystem;
  • Greybus lights staging drivers;
  • TTY drivers;
  • Framebuffer layer;
  • Virtio drivers;
  • 9P distributed file system;
  • eCrypt file system;
  • EROFS file system;
  • Ext4 file system;
  • F2FS file system;
  • JFFS2 file system;
  • Network file system client;
  • NILFS2 file system;
  • SMB network file system;
  • Kernel debugger infrastructure;
  • IRQ subsystem;
  • Tracing infrastructure;
  • Dynamic debug library;
  • 9P file system network protocol;
  • Bluetooth subsystem;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • Netfilter;
  • NET/ROM layer;
  • NFC subsystem;
  • NSH protocol;
  • Open vSwitch;
  • Phonet protocol;
  • TIPC protocol;
  • Unix domain sockets;
  • Wireless networking;
  • eXpress Data Path;
  • XFRM subsystem;
  • ALSA framework

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-5.4.0-1090-bluefield –  5.4.0-1090.97
linux-image-bluefield –  5.4.0.1090.86

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References

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