1. Ubuntu Security Notices
  2. USN-7332-2

USN-7332-2: Linux kernel vulnerabilities

Publication date

11 March 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-kvm - Linux kernel for cloud environments

Details

Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)

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:

  • PowerPC architecture;
  • Block layer subsystem;
  • GPIO subsystem;
  • GPU drivers;
  • Media drivers;
  • Network drivers;
  • SCSI subsystem;
  • Direct Digital Synthesis drivers;
  • TTY drivers;
  • 9P distributed file system;
  • JFS file system;
  • NILFS2 file system;
  • File systems infrastructure;
  • BPF...

Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)

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:

  • PowerPC architecture;
  • Block layer subsystem;
  • GPIO subsystem;
  • GPU drivers;
  • Media drivers;
  • Network drivers;
  • SCSI subsystem;
  • Direct Digital Synthesis drivers;
  • TTY drivers;
  • 9P distributed file system;
  • JFS file system;
  • NILFS2 file system;
  • File systems infrastructure;
  • BPF subsystem;
  • Netfilter;
  • Network sockets;
  • Memory management;
  • Amateur Radio drivers;
  • B.A.T.M.A.N. meshing protocol;
  • Bluetooth subsystem;
  • Ethernet bridge;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • Netlink;
  • TIPC protocol;
  • Wireless networking;
  • 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
16.04 xenial linux-image-4.4.0-1142-kvm –  4.4.0-1142.153  
linux-image-kvm –  4.4.0.1142.139  

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References

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