1. Ubuntu Security Notices
  2. USN-8729-1

USN-8729-1: Linux kernel vulnerabilities

Publication date

7 September 2026

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:

  • ARM32 architecture;
  • ARM64 architecture;
  • PowerPC architecture;
  • Compute Acceleration Framework;
  • Drivers core;
  • Bluetooth drivers;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • EFI core;
  • GPU drivers;
  • Hardware monitoring drivers;
  • InfiniBand drivers;
  • Network drivers;
  • Microsoft Azure Network Adapter (MANA) driver;
  • SCSI subsystem;
  • SPI subsystem;
  • Network file systems library;
  • NTFS3 file system;
  • SMB network file system;
  • File systems infrastructure;
  • Software nodes and device properties;
  • Bluetooth subsystem;
  • Netfilter;
  • Tracing infrastructure;
  • io_uring subsystem;
  • IRQ...

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;
  • ARM64 architecture;
  • PowerPC architecture;
  • Compute Acceleration Framework;
  • Drivers core;
  • Bluetooth drivers;
  • Arm Firmware Framework for ARMv8-A(FFA);
  • EFI core;
  • GPU drivers;
  • Hardware monitoring drivers;
  • InfiniBand drivers;
  • Network drivers;
  • Microsoft Azure Network Adapter (MANA) driver;
  • SCSI subsystem;
  • SPI subsystem;
  • Network file systems library;
  • NTFS3 file system;
  • SMB network file system;
  • File systems infrastructure;
  • Software nodes and device properties;
  • Bluetooth subsystem;
  • Netfilter;
  • Tracing infrastructure;
  • io_uring subsystem;
  • IRQ subsystem;
  • KProbes tracing;
  • Memory management;
  • B.A.T.M.A.N. meshing protocol;
  • Ethernet bridge;
  • Networking core;
  • IPv4 networking;
  • IPv6 networking;
  • Multipath TCP;
  • Phonet protocol;
  • SMC sockets;
  • TLS protocol;
  • Unix domain sockets;
  • VMware vSockets driver;
  • Wireless networking;
  • Key management;
  • Linux Security Modules (LSM) Framework;
  • ALSA framework;
  • AudioScience HPI 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
24.04 LTS noble linux-image-6.8.0-1049-gkeop –  6.8.0-1049.53
linux-image-6.8.0-1062-gke –  6.8.0-1062.70
linux-image-6.8.0-1062-gke-64k –  6.8.0-1062.70
linux-image-6.8.0-1062-nvidia –  6.8.0-1062.65
linux-image-6.8.0-1062-nvidia-64k –  6.8.0-1062.65
linux-image-6.8.0-1062-nvidia-lowlatency –  6.8.0-1062.65.1
linux-image-6.8.0-1062-nvidia-lowlatency-64k –  6.8.0-1062.65.1
linux-image-6.8.0-1064-raspi –  6.8.0-1064.68
linux-image-6.8.0-1067-gcp –  6.8.0-1067.75
linux-image-6.8.0-1067-gcp-64k –  6.8.0-1067.75
linux-image-6.8.0-1067-gcp-fips –  6.8.0-1067.75+fips1  
linux-image-6.8.0-139-fips –  6.8.0-139.139+fips1  
linux-image-6.8.0-139-generic –  6.8.0-139.139
linux-image-6.8.0-139-generic-64k –  6.8.0-139.139
linux-image-6.8.1-1059-realtime –  6.8.1-1059.60  
linux-image-fips –  6.8.0-139.139+fips1  
linux-image-fips-6.8 –  6.8.0-139.139+fips1  
linux-image-gcp-6.8 –  6.8.0-1067.75
linux-image-gcp-64k-6.8 –  6.8.0-1067.75
linux-image-gcp-64k-lts-24.04 –  6.8.0-1067.75
linux-image-gcp-fips –  6.8.0-1067.75+fips1  
linux-image-gcp-fips-6.8 –  6.8.0-1067.75+fips1  
linux-image-gcp-lts-24.04 –  6.8.0-1067.75
linux-image-generic –  6.8.0-139.139
linux-image-generic-6.8 –  6.8.0-139.139
linux-image-generic-64k –  6.8.0-139.139
linux-image-generic-64k-6.8 –  6.8.0-139.139
linux-image-generic-lpae –  6.8.0-139.139
linux-image-gke –  6.8.0-1062.70
linux-image-gke-6.8 –  6.8.0-1062.70
linux-image-gke-64k –  6.8.0-1062.70
linux-image-gke-64k-6.8 –  6.8.0-1062.70
linux-image-gkeop –  6.8.0-1049.53
linux-image-gkeop-6.8 –  6.8.0-1049.53
linux-image-intel-iot-realtime –  6.8.1-1059.60  
linux-image-intel-iotg –  6.8.0-139.139
linux-image-kvm –  6.8.0-139.139
linux-image-laptop-23.10 –  6.8.0-139.139
linux-image-nvidia –  6.8.0-1062.65
linux-image-nvidia-6.8 –  6.8.0-1062.65
linux-image-nvidia-64k –  6.8.0-1062.65
linux-image-nvidia-64k-6.8 –  6.8.0-1062.65
linux-image-nvidia-lowlatency –  6.8.0-1062.65.1
linux-image-nvidia-lowlatency-6.8 –  6.8.0-1062.65.1
linux-image-nvidia-lowlatency-64k –  6.8.0-1062.65.1
linux-image-nvidia-lowlatency-64k-6.8 –  6.8.0-1062.65.1
linux-image-raspi –  6.8.0-1064.68
linux-image-raspi-6.8 –  6.8.0-1064.68
linux-image-realtime –  6.8.1-1059.60  
linux-image-realtime-6.8.1 –  6.8.1-1059.60  
linux-image-virtual –  6.8.0-139.139
linux-image-virtual-6.8 –  6.8.0-139.139
22.04 LTS jammy linux-image-6.8.0-1062-nvidia –  6.8.0-1062.65~22.04.1
linux-image-6.8.0-1062-nvidia-64k –  6.8.0-1062.65~22.04.1
linux-image-6.8.1-1059-realtime –  6.8.1-1059.60~22.04.1  
linux-image-nvidia-6.8 –  6.8.0-1062.65~22.04.1
linux-image-nvidia-64k-6.8 –  6.8.0-1062.65~22.04.1
linux-image-nvidia-64k-hwe-22.04 –  6.8.0-1062.65~22.04.1
linux-image-nvidia-hwe-22.04 –  6.8.0-1062.65~22.04.1
linux-image-realtime-6.8.1 –  6.8.1-1059.60~22.04.1  
linux-image-realtime-hwe-22.04 –  6.8.1-1059.60~22.04.1  

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References

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