1. Ubuntu Security Notices
  2. USN-7649-1

USN-7649-1: Linux kernel vulnerabilities

Publication date

17 July 2025

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;
  • PA-RISC architecture;
  • PowerPC architecture;
  • S390 architecture;
  • x86 architecture;
  • Compute Acceleration Framework;
  • Ublk userspace block driver;
  • Bluetooth drivers;
  • ARM SCMI message protocol;
  • GPU drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • Multiple devices driver;
  • Network drivers;
  • PCI subsystem;
  • PTP clock framework;
  • SPI subsystem;
  • BTRFS file system;
  • SMB network file system;
  • eXpress Data Path;
  • Universal MIDI packet (UMP) support module;
  • Tracing infrastructure;
  • Memory management;
  • IPv4 networking;
  • IPv6 networking;
  • Network traffic...

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;
  • PA-RISC architecture;
  • PowerPC architecture;
  • S390 architecture;
  • x86 architecture;
  • Compute Acceleration Framework;
  • Ublk userspace block driver;
  • Bluetooth drivers;
  • ARM SCMI message protocol;
  • GPU drivers;
  • IOMMU subsystem;
  • IRQ chip drivers;
  • Multiple devices driver;
  • Network drivers;
  • PCI subsystem;
  • PTP clock framework;
  • SPI subsystem;
  • BTRFS file system;
  • SMB network file system;
  • eXpress Data Path;
  • Universal MIDI packet (UMP) support module;
  • Tracing infrastructure;
  • Memory management;
  • IPv4 networking;
  • IPv6 networking;
  • Network traffic control;
  • AMD SoC Alsa drivers;
  • SoC Audio generic drivers

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
25.04 plucky linux-image-6.14.0-1006-realtime –  6.14.0-1006.6
linux-image-6.14.0-1009-raspi –  6.14.0-1009.9
linux-image-6.14.0-1011-gcp –  6.14.0-1011.11
linux-image-6.14.0-1011-gcp-64k –  6.14.0-1011.11
linux-image-6.14.0-24-generic –  6.14.0-24.24
linux-image-6.14.0-24-generic-64k –  6.14.0-24.24
linux-image-gcp –  6.14.0-1011.11
linux-image-gcp-6.14 –  6.14.0-1011.11
linux-image-gcp-64k –  6.14.0-1011.11
linux-image-gcp-64k-6.14 –  6.14.0-1011.11
linux-image-generic –  6.14.0-24.24
linux-image-generic-6.14 –  6.14.0-24.24
linux-image-generic-64k –  6.14.0-24.24
linux-image-generic-64k-6.14 –  6.14.0-24.24
linux-image-generic-64k-hwe-24.04 –  6.14.0-24.24
linux-image-generic-hwe-24.04 –  6.14.0-24.24
linux-image-oem-24.04 –  6.14.0-24.24
linux-image-oem-24.04a –  6.14.0-24.24
linux-image-raspi –  6.14.0-1009.9
linux-image-raspi-6.14 –  6.14.0-1009.9
linux-image-realtime –  6.14.0-1006.6
linux-image-realtime-6.14 –  6.14.0-1006.6
linux-image-realtime-hwe-24.04 –  6.14.0-1006.6
linux-image-virtual –  6.14.0-24.24
linux-image-virtual-6.14 –  6.14.0-24.24
linux-image-virtual-hwe-24.04 –  6.14.0-24.24

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References

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