Ubuntu Linux Kernel Security Advisory USN-8643

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Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-fips: Linux kernel with FIPS - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with FIPS - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-oracle: Linux kernel for Oracle Cloud systems - linux-realtime: Linux kernel for Real-time systems - linux-xilinx: Linux kernel for Xilinx systems - linux-gcp-6.8: Linux kernel for Google Cloud Platform (GCP) systems - linux-realtime-6.8: Linux kernel for Real-time systems Details: Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update correc... Read the Full Advisory

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-aws-fips: Linux kernel for Amazon Web Services (AWS) systems with FIPS

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-fips: Linux kernel with FIPS

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gcp-fips: Linux kernel for Google Cloud Platform (GCP) systems with

- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-realtime: Linux kernel for Real-time systems

- linux-xilinx: Linux kernel for Xilinx systems

- linux-gcp-6.8: Linux kernel for Google Cloud Platform (GCP) systems

- linux-realtime-6.8: Linux kernel for Real-time systems

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the system.

This update correc...

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS linux-image-6.8.0-1035-xilinx 6.8.0-1035.36 linux-image-6.8.0-1048-gkeop 6.8.0-1048.52 linux-image-6.8.0-1060-oracle 6.8.0-1060.63 linux-image-6.8.0-1060-oracle-64k 6.8.0-1060.63 linux-image-6.8.0-1063-aws 6.8.0-1063.66 linux-image-6.8.0-1063-aws-64k 6.8.0-1063.66 linux-image-6.8.0-1063-aws-fips 6.8.0-1063.66+fips1 Available with Ubuntu Pro linux-image-6.8.0-1065-azure 6.8.0-1065.73 linux-image-6.8.0-1066-gcp 6.8.0-1066.74 linux-image-6.8.0-1066-gcp-64k 6.8.0-1066.74 linux-image-6.8.0-1066-gcp-fips 6.8.0-1066.74+fips1 Available with Ubuntu Pro linux-image-6.8.0-138-fips 6.8.0-138.138+fips1 Available with Ubuntu Pro linux-image-6.8.0-138-generic 6.8.0-138.138 linux-image-6.8.0-138-generic-64k 6.8.0-138.138 linux-image-6.8.1-1058-realtime 6.8.1-1058.59 Available with Ubuntu Pro linux-image-aws-6.8 6.8.0-1063.66 linux-image-aws-64k-6.8 6.8.0-1063.66 linux-image-aws-64k-lts-24.04 6.8.0-1063.66 linux-image-aws-fips 6.8.0-1063.66+fips1 Available with Ubuntu Pro linux-image-aws-fips-6.8 6.8.0-1063.66+fips1 Available with Ubuntu Pro linux-image-aws-lts-24.04 6.8.0-1063.66 linux-image-azure-6.8 6.8.0-1065.73 linux-image-azure-lts-24.04 6.8.0-1065.73 linux-image-fips 6.8.0-138.138+fips1 Available with Ubuntu Pro linux-image-fips-6.8 6.8.0-138.138+fips1 Available with Ubuntu Pro linux-image-gcp-6.8 6.8.0-1066.74 linux-image-gcp-64k-6.8 6.8.0-1066.74 linux-image-gcp-64k-lts-24.04 6.8.0-1066.74 linux-image-gcp-fips 6.8.0-1066.74+fips1 Available with Ubuntu Pro linux-image-gcp-fips-6.8 6.8.0-1066.74+fips1 Available with Ubuntu Pro linux-image-gcp-lts-24.04 6.8.0-1066.74 linux-image-generic 6.8.0-138.138 linux-image-generic-6.8 6.8.0-138.138 linux-image-generic-64k 6.8.0-138.138 linux-image-generic-64k-6.8 6.8.0-138.138 linux-image-generic-lpae 6.8.0-138.138 linux-image-gkeop 6.8.0-1048.52 linux-image-gkeop-6.8 6.8.0-1048.52 linux-image-intel-iot-realtime 6.8.1-1058.59 Available with Ubuntu Pro linux-image-intel-iotg 6.8.0-138.138 linux-image-kvm 6.8.0-138.138 linux-image-laptop-23.10 6.8.0-138.138 linux-image-oem-20.04 6.8.0-138.138 linux-image-oem-20.04b 6.8.0-138.138 linux-image-oem-20.04c 6.8.0-138.138 linux-image-oem-20.04d 6.8.0-138.138 linux-image-oem-22.04 6.8.0-138.138 linux-image-oracle-6.8 6.8.0-1060.63 linux-image-oracle-64k-6.8 6.8.0-1060.63 linux-image-oracle-64k-lts-24.04 6.8.0-1060.63 linux-image-oracle-lts-24.04 6.8.0-1060.63 linux-image-realtime 6.8.1-1058.59 Available with Ubuntu Pro linux-image-realtime-6.8.1 6.8.1-1058.59 Available with Ubuntu Pro linux-image-virtual 6.8.0-138.138 linux-image-virtual-6.8 6.8.0-138.138 linux-image-xilinx 6.8.0.1035.36 linux-image-xilinx-6.8 6.8.0.1035.36 linux-image-xilinx-zynqmp 6.8.0.1035.36 Ubuntu 22.04 LTS linux-image-6.8.0-1066-gcp 6.8.0-1066.74~22.04.1 linux-image-6.8.0-1066-gcp-64k 6.8.0-1066.74~22.04.1 linux-image-6.8.1-1058-realtime 6.8.1-1058.59~22.04.1 Available with Ubuntu Pro linux-image-gcp 6.8.0-1066.74~22.04.1 linux-image-gcp-6.8 6.8.0-1066.74~22.04.1 linux-image-gcp-64k 6.8.0-1066.74~22.04.1 linux-image-gcp-64k-6.8 6.8.0-1066.74~22.04.1 linux-image-realtime-6.8.1 6.8.1-1058.59~22.04.1 Available with Ubuntu Pro linux-image-realtime-hwe-22.04 6.8.1-1058.59~22.04.1 Available with Ubuntu Pro 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.

CVE-2026-53224, CVE-2026-53246, CVE-2026-53247, CVE-2026-64531

Ubuntu Security Notice USN-8643-1

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