========================================================================== Ubuntu Security Notice USN-8630-1 August 12, 2026
linux, linux-aws, linux-aws-fips, linux-azure, linux-azure-6.8, linux-azure-fde, linux-azure-fde-6.8, linux-azure-fips, linux-fips, linux-gcp, linux-gcp-6.8, linux-gcp-fips, linux-gke, linux-gkeop, linux-ibm, linux-ibm-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-realtime, linux-realtime-6.8, linux-xilinx vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: 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-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems - linux-azure-fips: Linux kernel for Microsoft Azure Cloud systems with FIPS - 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-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-nvidia-lowlatency: Linux low latency kernel for NVIDIA systems
- linux-realtime: Linux kernel for Real-time systems
- linux-xilinx: Linux kernel for Xilinx systems
- linux-azure-6.8: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-6.8: Linux kernel for Microsoft Azure CVM cloud systems
- linux-gcp-6.8: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm-6.8: Linux kernel for IBM cloud systems
- linux-nvidia-6.8: Linux kernel for NVIDIA 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 corrects flaws in the following subsystems:
- x86 architecture;
- InfiniBand drivers;
- Network drivers;
- Mellanox network drivers;
- File systems infrastructure;
- IPv4 networking;
- Network traffic control;
- TCP network protocol;
- B.A.T.M.A.N. meshing protocol;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- RxRPC session sockets;
- SCTP protocol;
- SMC sockets;
(CVE-2026-43083, CVE-2026-43197, CVE-2026-43198, CVE-2026-43465,
CVE-2026-46242, CVE-2026-46325, CVE-2026-46331, CVE-2026-52914,
CVE-2026-52924, CVE-2026-52931, CVE-2026-53151, CVE-2026-53176,
CVE-2026-53212, CVE-2026-53215, CVE-2026-53225, CVE-2026-53228,
CVE-2026-53359)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
linux-image-6.8.0-1034-xilinx 6.8.0-1034.35
linux-image-6.8.0-1047-gkeop 6.8.0-1047.51
linux-image-6.8.0-1060-gke 6.8.0-1060.68
linux-image-6.8.0-1060-gke-64k 6.8.0-1060.68
linux-image-6.8.0-1060-nvidia 6.8.0-1060.63
linux-image-6.8.0-1060-nvidia-64k 6.8.0-1060.63
linux-image-6.8.0-1060-nvidia-lowlatency 6.8.0-1060.63.1
linux-image-6.8.0-1060-nvidia-lowlatency-64k 6.8.0-1060.63.1
linux-image-6.8.0-1062-aws 6.8.0-1062.65
linux-image-6.8.0-1062-aws-64k 6.8.0-1062.65
linux-image-6.8.0-1062-aws-fips 6.8.0-1062.65+fips1
Available with Ubuntu Pro
linux-image-6.8.0-1062-ibm 6.8.0-1062.63
linux-image-6.8.0-1063-azure-fde 6.8.0-1063.70
linux-image-6.8.0-1064-azure 6.8.0-1064.72
linux-image-6.8.0-1064-azure-fips 6.8.0-1064.72+fips1
Available with Ubuntu Pro
linux-image-6.8.0-1065-gcp 6.8.0-1065.73
linux-image-6.8.0-1065-gcp-64k 6.8.0-1065.73
linux-image-6.8.0-1065-gcp-fips 6.8.0-1065.73+fips1
Available with Ubuntu Pro
linux-image-6.8.0-137-fips 6.8.0-137.137+fips1
Available with Ubuntu Pro
linux-image-6.8.0-137-generic 6.8.0-137.137
linux-image-6.8.0-137-generic-64k 6.8.0-137.137
linux-image-6.8.1-1057-realtime 6.8.1-1057.58
Available with Ubuntu Pro
linux-image-aws-6.8 6.8.0-1062.65
linux-image-aws-64k-6.8 6.8.0-1062.65
linux-image-aws-64k-lts-24.04 6.8.0-1062.65
linux-image-aws-fips 6.8.0-1062.65+fips1
Available with Ubuntu Pro
linux-image-aws-fips-6.8 6.8.0-1062.65+fips1
Available with Ubuntu Pro
linux-image-aws-lts-24.04 6.8.0-1062.65
linux-image-azure-6.8 6.8.0-1064.72
linux-image-azure-fde-6.8 6.8.0-1063.70
linux-image-azure-fde-lts-24.04 6.8.0-1063.70
linux-image-azure-fips 6.8.0-1064.72+fips1
Available with Ubuntu Pro
linux-image-azure-fips-6.8 6.8.0-1064.72+fips1
Available with Ubuntu Pro
linux-image-azure-lts-24.04 6.8.0-1064.72
linux-image-fips 6.8.0-137.137+fips1
Available with Ubuntu Pro
linux-image-fips-6.8 6.8.0-137.137+fips1
Available with Ubuntu Pro
linux-image-gcp-6.8 6.8.0-1065.73
linux-image-gcp-64k-6.8 6.8.0-1065.73
linux-image-gcp-64k-lts-24.04 6.8.0-1065.73
linux-image-gcp-fips 6.8.0-1065.73+fips1
Available with Ubuntu Pro
linux-image-gcp-fips-6.8 6.8.0-1065.73+fips1
Available with Ubuntu Pro
linux-image-gcp-lts-24.04 6.8.0-1065.73
linux-image-generic 6.8.0-137.137
linux-image-generic-6.8 6.8.0-137.137
linux-image-generic-64k 6.8.0-137.137
linux-image-generic-64k-6.8 6.8.0-137.137
linux-image-generic-lpae 6.8.0-137.137
linux-image-gke 6.8.0-1060.68
linux-image-gke-6.8 6.8.0-1060.68
linux-image-gke-64k 6.8.0-1060.68
linux-image-gke-64k-6.8 6.8.0-1060.68
linux-image-gkeop 6.8.0-1047.51
linux-image-gkeop-6.8 6.8.0-1047.51
linux-image-ibm 6.8.0-1062.63
linux-image-ibm-6.8 6.8.0-1062.63
linux-image-ibm-classic 6.8.0-1062.63
linux-image-ibm-lts-24.04 6.8.0-1062.63
linux-image-intel-iot-realtime 6.8.1-1057.58
Available with Ubuntu Pro
linux-image-intel-iotg 6.8.0-137.137
linux-image-kvm 6.8.0-137.137
linux-image-nvidia 6.8.0-1060.63
linux-image-nvidia-6.8 6.8.0-1060.63
linux-image-nvidia-64k 6.8.0-1060.63
linux-image-nvidia-64k-6.8 6.8.0-1060.63
linux-image-nvidia-lowlatency 6.8.0-1060.63.1
linux-image-nvidia-lowlatency-6.8 6.8.0-1060.63.1
linux-image-nvidia-lowlatency-64k 6.8.0-1060.63.1
linux-image-nvidia-lowlatency-64k-6.8 6.8.0-1060.63.1
linux-image-realtime 6.8.1-1057.58
Available with Ubuntu Pro
linux-image-realtime-6.8.1 6.8.1-1057.58
Available with Ubuntu Pro
linux-image-virtual 6.8.0-137.137
linux-image-virtual-6.8 6.8.0-137.137
linux-image-xilinx 6.8.0.1034.35
linux-image-xilinx-6.8 6.8.0.1034.35
linux-image-xilinx-zynqmp 6.8.0.1034.35
Ubuntu 22.04 LTS
linux-image-6.8.0-1060-nvidia 6.8.0-1060.63~22.04.1
linux-image-6.8.0-1060-nvidia-64k 6.8.0-1060.63~22.04.1
linux-image-6.8.0-1062-ibm 6.8.0-1062.63~22.04.1
linux-image-6.8.0-1063-azure-fde 6.8.0-1063.70~22.04.1
linux-image-6.8.0-1064-azure 6.8.0-1064.72~22.04.1
linux-image-6.8.0-1065-gcp 6.8.0-1065.73~22.04.1
linux-image-6.8.0-1065-gcp-64k 6.8.0-1065.73~22.04.1
linux-image-6.8.1-1057-realtime 6.8.1-1057.58~22.04.1
Available with Ubuntu Pro
linux-image-azure 6.8.0-1064.72~22.04.1
linux-image-azure-6.8 6.8.0-1064.72~22.04.1
linux-image-azure-fde 6.8.0-1063.70~22.04.1
linux-image-azure-fde-6.8 6.8.0-1063.70~22.04.1
linux-image-gcp 6.8.0-1065.73~22.04.1
linux-image-gcp-6.8 6.8.0-1065.73~22.04.1
linux-image-gcp-64k 6.8.0-1065.73~22.04.1
linux-image-gcp-64k-6.8 6.8.0-1065.73~22.04.1
linux-image-ibm-6.8 6.8.0-1062.63~22.04.1
linux-image-nvidia-6.8 6.8.0-1060.63~22.04.1
linux-image-nvidia-64k-6.8 6.8.0-1060.63~22.04.1
linux-image-nvidia-64k-hwe-22.04 6.8.0-1060.63~22.04.1
linux-image-nvidia-hwe-22.04 6.8.0-1060.63~22.04.1
linux-image-realtime-6.8.1 6.8.1-1057.58~22.04.1
Available with Ubuntu Pro
linux-image-realtime-hwe-22.04 6.8.1-1057.58~22.04.1
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.
References:
https://ubuntu.com/security/notices/USN-8630-1
CVE-2026-43083, CVE-2026-43197, CVE-2026-43198, CVE-2026-43465,
CVE-2026-46242, CVE-2026-46325, CVE-2026-46331, CVE-2026-52914,
CVE-2026-52924, CVE-2026-52931, CVE-2026-53151, CVE-2026-53176,
CVE-2026-53212, CVE-2026-53215, CVE-2026-53225, CVE-2026-53228,
CVE-2026-53359
Package Information:
https://launchpad.net/ubuntu/+source/linux/6.8.0-137.137
https://launchpad.net/ubuntu/+source/linux-aws/6.8.0-1062.65
https://launchpad.net/ubuntu/+source/linux-aws-fips/6.8.0-1062.65+fips1
https://launchpad.net/ubuntu/+source/linux-azure/6.8.0-1064.72
https://launchpad.net/ubuntu/+source/linux-azure-fde/6.8.0-1063.70
https://launchpad.net/ubuntu/+source/linux-azure-fips/6.8.0-1064.72+fips1
https://launchpad.net/ubuntu/+source/linux-fips/6.8.0-137.137+fips1
https://launchpad.net/ubuntu/+source/linux-gcp/6.8.0-1065.73
https://launchpad.net/ubuntu/+source/linux-gcp-fips/6.8.0-1065.73+fips1
https://launchpad.net/ubuntu/+source/linux-gke/6.8.0-1060.68
https://launchpad.net/ubuntu/+source/linux-gkeop/6.8.0-1047.51
https://launchpad.net/ubuntu/+source/linux-ibm/6.8.0-1062.63
https://launchpad.net/ubuntu/+source/linux-nvidia/6.8.0-1060.63
https://launchpad.net/ubuntu/+source/linux-nvidia-lowlatency/6.8.0-1060.63.1
https://launchpad.net/ubuntu/+source/linux-realtime/6.8.1-1057.58
https://launchpad.net/ubuntu/+source/linux-xilinx/6.8.0-1034.35
https://launchpad.net/ubuntu/+source/linux-azure-6.8/6.8.0-1064.72~22.04.1
https://launchpad.net/ubuntu/+source/linux-azure-fde-6.8/6.8.0-1063.70~22.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-6.8/6.8.0-1065.73~22.04.1 https://launchpad.net/ubuntu/+source/linux-ibm-6.8/6.8.0-1062.63~22.04.1 https://launchpad.net/ubuntu/+source/linux-nvidia-6.8/6.8.0-1060.63~22.04.1https://launchpad.net/ubuntu/+source/linux-realtime-6.8/6.8.1-1057.58~22.04.1
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