1. Ubuntu Security Notices
  2. USN-7703-1

USN-7703-1: Linux kernel vulnerabilities

Publication date

19 August 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;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Input Device (Mouse) drivers;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • PCI subsystem;
  • S/390 drivers;
  • SPI subsystem;
  • Trusted Execution Environment drivers;
  • UFS subsystem;
  • USB Device Class drivers;
  • USB core drivers;
  • USB Gadget drivers;
  • Framebuffer layer;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • File systems infrastructure;
  • SMB network file system;
  • Networking core;
  • L3 Master device support...

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;
  • PowerPC architecture;
  • x86 architecture;
  • Block layer subsystem;
  • GPIO subsystem;
  • GPU drivers;
  • HID subsystem;
  • Input Device (Mouse) drivers;
  • Multiple devices driver;
  • Media drivers;
  • Network drivers;
  • PCI subsystem;
  • S/390 drivers;
  • SPI subsystem;
  • Trusted Execution Environment drivers;
  • UFS subsystem;
  • USB Device Class drivers;
  • USB core drivers;
  • USB Gadget drivers;
  • Framebuffer layer;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • File systems infrastructure;
  • SMB network file system;
  • Networking core;
  • L3 Master device support module;
  • TCP network protocol;
  • io_uring subsystem;
  • Process Accounting mechanism;
  • BPF subsystem;
  • Timer subsystem;
  • Workqueue subsystem;
  • Memory management;
  • Amateur Radio drivers;
  • B.A.T.M.A.N. meshing protocol;
  • IPv4 networking;
  • IPv6 networking;
  • Multipath TCP;
  • Open vSwitch;
  • Network traffic control;
  • SOF 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
24.04 noble linux-image-6.8.0-1035-aws –  6.8.0-1035.37
linux-image-6.8.0-1035-aws-64k –  6.8.0-1035.37
linux-image-6.8.0-78-generic –  6.8.0-78.78
linux-image-6.8.0-78-generic-64k –  6.8.0-78.78
linux-image-6.8.0-78-lowlatency –  6.8.0-78.78.1
linux-image-6.8.0-78-lowlatency-64k –  6.8.0-78.78.1
linux-image-6.8.1-1030-realtime –  6.8.1-1030.31  
linux-image-aws-6.8 –  6.8.0-1035.37
linux-image-aws-64k-6.8 –  6.8.0-1035.37
linux-image-aws-64k-lts-24.04 –  6.8.0-1035.37
linux-image-aws-lts-24.04 –  6.8.0-1035.37
linux-image-generic –  6.8.0-78.78
linux-image-generic-6.8 –  6.8.0-78.78
linux-image-generic-64k –  6.8.0-78.78
linux-image-generic-64k-6.8 –  6.8.0-78.78
linux-image-generic-lpae –  6.8.0-78.78
linux-image-kvm –  6.8.0-78.78
linux-image-lowlatency –  6.8.0-78.78.1
linux-image-lowlatency-6.8 –  6.8.0-78.78.1
linux-image-lowlatency-64k –  6.8.0-78.78.1
linux-image-lowlatency-64k-6.8 –  6.8.0-78.78.1
linux-image-realtime –  6.8.1-1030.31  
linux-image-realtime-6.8.1 –  6.8.1-1030.31  
linux-image-virtual –  6.8.0-78.78
linux-image-virtual-6.8 –  6.8.0-78.78
22.04 jammy linux-image-6.8.0-78-lowlatency –  6.8.0-78.78.1~22.04.1
linux-image-6.8.0-78-lowlatency-64k –  6.8.0-78.78.1~22.04.1
linux-image-lowlatency-6.8 –  6.8.0-78.78.1~22.04.1
linux-image-lowlatency-64k-6.8 –  6.8.0-78.78.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 –  6.8.0-78.78.1~22.04.1
linux-image-lowlatency-hwe-22.04 –  6.8.0-78.78.1~22.04.1

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References

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