1. Ubuntu Security Notices
  2. USN-7448-1

USN-7448-1: Linux kernel vulnerabilities

Publication date

23 April 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)

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:

  • GPIO subsystem;
  • GPU drivers;
  • IRQ chip drivers;
  • Network drivers;
  • Mellanox network drivers;
  • x86 platform drivers;
  • i.MX PM domains;
  • SCSI subsystem;
  • USB Serial drivers;
  • AFS file system;
  • GFS2 file system;
  • File systems infrastructure;
  • Proc file system;
  • SMB network file system;
  • Timer subsystem;
  • Kernel CPU control infrastructure;
  • Memory...

It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)

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:

  • GPIO subsystem;
  • GPU drivers;
  • IRQ chip drivers;
  • Network drivers;
  • Mellanox network drivers;
  • x86 platform drivers;
  • i.MX PM domains;
  • SCSI subsystem;
  • USB Serial drivers;
  • AFS file system;
  • GFS2 file system;
  • File systems infrastructure;
  • Proc file system;
  • SMB network file system;
  • Timer subsystem;
  • Kernel CPU control infrastructure;
  • Memory management;
  • Networking core;
  • Ethtool driver;
  • IEEE 802.15.4 subsystem;
  • Open vSwitch;
  • Network traffic control;
  • VMware vSockets driver

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
24.10 oracular linux-image-6.11.0-1013-azure –  6.11.0-1013.13
linux-image-6.11.0-1013-azure-fde –  6.11.0-1013.13
linux-image-azure –  6.11.0-1013.13
linux-image-azure-fde –  6.11.0-1013.13
24.04 noble linux-image-6.11.0-1013-azure –  6.11.0-1013.13~24.04.1
linux-image-6.11.0-1013-azure-fde –  6.11.0-1013.13~24.04.1
linux-image-azure –  6.11.0-1013.13~24.04.1
linux-image-azure-fde –  6.11.0-1013.13~24.04.1

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References

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