Home / mailings [USN-8244-1] Linux kernel vulnerabilities
Posted on 07 May 2026
Ubuntu Security==========================================================================Ubuntu Security Notice USN-8244-1
May 07, 2026
linux, linux-aws, linux-aws-6.17, linux-gcp, linux-gcp-6.17,
linux-hwe-6.17, linux-oracle, linux-realtime, linux-realtime-6.17
vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 25.10
- Ubuntu 24.04 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-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-realtime: Linux kernel for Real-time systems
- linux-aws-6.17: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-6.17: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-6.17: Linux hardware enablement (HWE) kernel
- linux-realtime-6.17: 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:
- Network drivers;
- NVME drivers;
- Netfilter;
(CVE-2026-23112, CVE-2026-23231, CVE-2026-23273)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 25.10
linux-image-6.17.0-1011-realtime 6.17.0-1011.12
linux-image-6.17.0-1012-oracle 6.17.0-1012.12
linux-image-6.17.0-1012-oracle-64k 6.17.0-1012.12
linux-image-6.17.0-1013-aws 6.17.0-1013.13
linux-image-6.17.0-1013-aws-64k 6.17.0-1013.13
linux-image-6.17.0-1013-gcp 6.17.0-1013.13
linux-image-6.17.0-1013-gcp-64k 6.17.0-1013.13
linux-image-6.17.0-23-generic 6.17.0-23.23
linux-image-6.17.0-23-generic-64k 6.17.0-23.23
linux-image-aws 6.17.0-1013.13
linux-image-aws-6.17 6.17.0-1013.13
linux-image-aws-64k 6.17.0-1013.13
linux-image-aws-64k-6.17 6.17.0-1013.13
linux-image-gcp 6.17.0-1013.13
linux-image-gcp-6.17 6.17.0-1013.13
linux-image-gcp-64k 6.17.0-1013.13
linux-image-gcp-64k-6.17 6.17.0-1013.13
linux-image-generic 6.17.0-23.23
linux-image-generic-6.17 6.17.0-23.23
linux-image-generic-64k 6.17.0-23.23
linux-image-generic-64k-6.17 6.17.0-23.23
linux-image-oracle 6.17.0-1012.12
linux-image-oracle-6.17 6.17.0-1012.12
linux-image-oracle-64k 6.17.0-1012.12
linux-image-oracle-64k-6.17 6.17.0-1012.12
linux-image-realtime 6.17.0-1011.12
linux-image-realtime-6.17 6.17.0-1011.12
linux-image-virtual 6.17.0-23.23
linux-image-virtual-6.17 6.17.0-23.23
Ubuntu 24.04 LTS
linux-image-6.17.0-1011-realtime 6.17.0-1011.12~24.04.1
Available with Ubuntu Pro
linux-image-6.17.0-1013-aws 6.17.0-1013.13~24.04.1
linux-image-6.17.0-1013-aws-64k 6.17.0-1013.13~24.04.1
linux-image-6.17.0-1013-gcp 6.17.0-1013.13~24.04.1
linux-image-6.17.0-1013-gcp-64k 6.17.0-1013.13~24.04.1
linux-image-6.17.0-23-generic 6.17.0-23.23~24.04.1
linux-image-6.17.0-23-generic-64k 6.17.0-23.23~24.04.1
linux-image-aws 6.17.0-1013.13~24.04.1
linux-image-aws-6.17 6.17.0-1013.13~24.04.1
linux-image-aws-64k 6.17.0-1013.13~24.04.1
linux-image-aws-64k-6.17 6.17.0-1013.13~24.04.1
linux-image-gcp 6.17.0-1013.13~24.04.1
linux-image-gcp-6.17 6.17.0-1013.13~24.04.1
linux-image-gcp-64k 6.17.0-1013.13~24.04.1
linux-image-gcp-64k-6.17 6.17.0-1013.13~24.04.1
linux-image-generic-6.17 6.17.0-23.23~24.04.1
linux-image-generic-64k-6.17 6.17.0-23.23~24.04.1
linux-image-generic-64k-hwe-24.04 6.17.0-23.23~24.04.1
linux-image-generic-hwe-24.04 6.17.0-23.23~24.04.1
linux-image-realtime-6.17 6.17.0-1011.12~24.04.1
Available with Ubuntu Pro
linux-image-realtime-hwe-24.04 6.17.0-1011.12~24.04.1
Available with Ubuntu Pro
linux-image-virtual-6.17 6.17.0-23.23~24.04.1
linux-image-virtual-hwe-24.04 6.17.0-23.23~24.04.1
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-8244-1
CVE-2026-23112, CVE-2026-23231, CVE-2026-23273
Package Information:
https://launchpad.net/ubuntu/+source/linux/6.17.0-23.23
https://launchpad.net/ubuntu/+source/linux-aws/6.17.0-1013.13
https://launchpad.net/ubuntu/+source/linux-gcp/6.17.0-1013.13
https://launchpad.net/ubuntu/+source/linux-oracle/6.17.0-1012.12
https://launchpad.net/ubuntu/+source/linux-realtime/6.17.0-1011.12
https://launchpad.net/ubuntu/+source/linux-aws-6.17/6.17.0-1013.13~24.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-6.17/6.17.0-1013.13~24.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-6.17/6.17.0-23.23~24.04.1
https://launchpad.net/ubuntu/+source/linux-realtime-6.17/6.17.0-1011.12~24.04.1
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