1. Ubuntu Security Notices
  2. USN-6867-1

USN-6867-1: Linux kernel vulnerabilities

Publication date

3 July 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service.
(CVE-2024-0841)

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;
  • PowerPC architecture;
  • x86 architecture;
  • DMA engine subsystem;
  • EFI core;
  • GPU drivers;
  • InfiniBand drivers;
  • Multiple devices driver;
  • Network drivers;
  • Power supply drivers;
  • TCM subsystem;
  • Userspace I/O drivers;
  • USB subsystem;
  • Framebuffer layer;
  • AFS file system;
  • File systems infrastructure;
  • BTRFS file system;
  • Ext4 file...

It was discovered that the HugeTLB file system component of the Linux
Kernel contained a NULL pointer dereference vulnerability. A privileged
attacker could possibly use this to to cause a denial of service.
(CVE-2024-0841)

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;
  • PowerPC architecture;
  • x86 architecture;
  • DMA engine subsystem;
  • EFI core;
  • GPU drivers;
  • InfiniBand drivers;
  • Multiple devices driver;
  • Network drivers;
  • Power supply drivers;
  • TCM subsystem;
  • Userspace I/O drivers;
  • USB subsystem;
  • Framebuffer layer;
  • AFS file system;
  • File systems infrastructure;
  • BTRFS file system;
  • Ext4 file system;
  • Bluetooth subsystem;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • L2TP protocol;
  • MAC80211 subsystem;
  • Netfilter;
  • Netlink;
  • Wireless networking

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 LTS focal linux-image-bluefield –  5.4.0.1086.82
linux-image-5.4.0-1086-bluefield –  5.4.0-1086.93
linux-image-5.4.0-1038-iot –  5.4.0-1038.39

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References

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