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==========================================================================
Ubuntu Security Notice USN-8015-4
February 11, 2026
linux-aws, linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-ibm,
linux-ibm-6.8, linux-lowlatency-hwe-6.8 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-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-aws-6.8: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-6.8: Linux kernel for Google Cloud Platform (GCP) systems
- linux-ibm-6.8: Linux kernel for IBM cloud systems
- linux-lowlatency-hwe-6.8: Linux low latency kernel
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:
- Cryptographic API;
- SMB network file system;
- io_uring subsystem;
(CVE-2025-38561, CVE-2025-39698, CVE-2025-40019)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
linux-image-6.8.0-1043-ibm 6.8.0-1043.43
linux-image-6.8.0-1045-aws 6.8.0-1045.47
linux-image-6.8.0-1045-aws-64k 6.8.0-1045.47
linux-image-6.8.0-1046-gcp 6.8.0-1046.49
linux-image-6.8.0-1046-gcp-64k 6.8.0-1046.49
linux-image-aws-6.8 6.8.0-1045.47
linux-image-aws-64k-6.8 6.8.0-1045.47
linux-image-aws-64k-lts-24.04 6.8.0-1045.47
linux-image-aws-lts-24.04 6.8.0-1045.47
linux-image-gcp-6.8 6.8.0-1046.49
linux-image-gcp-64k-6.8 6.8.0-1046.49
linux-image-gcp-64k-lts-24.04 6.8.0-1046.49
linux-image-gcp-lts-24.04 6.8.0-1046.49
linux-image-ibm 6.8.0-1043.43
linux-image-ibm-6.8 6.8.0-1043.43
linux-image-ibm-classic 6.8.0-1043.43
linux-image-ibm-lts-24.04 6.8.0-1043.43
Ubuntu 22.04 LTS
linux-image-6.8.0-1043-ibm 6.8.0-1043.43~22.04.1
linux-image-6.8.0-1045-aws 6.8.0-1045.47~22.04.1
linux-image-6.8.0-1045-aws-64k 6.8.0-1045.47~22.04.1
linux-image-6.8.0-1046-gcp 6.8.0-1046.49~22.04.1
linux-image-6.8.0-1046-gcp-64k 6.8.0-1046.49~22.04.1
linux-image-6.8.0-94-lowlatency 6.8.0-94.96.1~22.04.1
linux-image-6.8.0-94-lowlatency-64k 6.8.0-94.96.1~22.04.1
linux-image-aws 6.8.0-1045.47~22.04.1
linux-image-aws-6.8 6.8.0-1045.47~22.04.1
linux-image-aws-64k 6.8.0-1045.47~22.04.1
linux-image-aws-64k-6.8 6.8.0-1045.47~22.04.1
linux-image-gcp 6.8.0-1046.49~22.04.1
linux-image-gcp-6.8 6.8.0-1046.49~22.04.1
linux-image-gcp-64k 6.8.0-1046.49~22.04.1
linux-image-gcp-64k-6.8 6.8.0-1046.49~22.04.1
linux-image-ibm-6.8 6.8.0-1043.43~22.04.1
linux-image-lowlatency-6.8 6.8.0-94.96.1~22.04.1
linux-image-lowlatency-64k-6.8 6.8.0-94.96.1~22.04.1
linux-image-lowlatency-64k-hwe-22.04 6.8.0-94.96.1~22.04.1
linux-image-lowlatency-hwe-22.04 6.8.0-94.96.1~22.04.1
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-8015-4
https://ubuntu.com/security/notices/USN-8015-3
https://ubuntu.com/security/notices/USN-8015-2
https://ubuntu.com/security/notices/USN-8015-1
CVE-2025-38561, CVE-2025-39698, CVE-2025-40019
Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/6.8.0-1045.47
https://launchpad.net/ubuntu/+source/linux-gcp/6.8.0-1046.49
https://launchpad.net/ubuntu/+source/linux-ibm/6.8.0-1043.43
https://launchpad.net/ubuntu/+source/linux-aws-6.8/6.8.0-1045.47~22.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-6.8/6.8.0-1046.49~22.04.1
https://launchpad.net/ubuntu/+source/linux-ibm-6.8/6.8.0-1043.43~22.04.1
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-6.8/6.8.0-94.96.1~22.04.1
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