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USN-8729-1: Linux kernel vulnerabilities

USN-8729-1: Linux kernel vulnerabilities

Ubuntu • September 7, 2026

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:

PowerPC architecture;

Compute Acceleration Framework;

Arm Firmware Framework for ARMv8-A(FFA);

Hardware monitoring drivers;

Microsoft Azure Network Adapter (MANA) driver;

Network file systems library;

SMB network file system;

File systems infrastructure;

Software nodes and device properties;

Tracing infrastructure;

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

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;

Compute Acceleration Framework;

Arm Firmware Framework for ARMv8-A(FFA);

Hardware monitoring drivers;

Microsoft Azure Network Adapter (MANA) driver;

Network file systems library;

SMB network file system;

File systems infrastructure;

Software nodes and device properties;

Tracing infrastructure;

B.A.T.M.A.N. meshing protocol;

VMware vSockets driver;

Linux Security Modules (LSM) Framework;

AudioScience HPI driver

After a standard system update you need to reboot your computer to make all the necessary changes.

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:

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