========================================================================== Ubuntu Security Notice USN-7906-2 December 05, 2025
linux-gcp vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-gcp: Linux kernel for Google Cloud Platform (GCP) 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; - Cryptographic API; - Android drivers; - TTY drivers; - F2FS file system; - 9P file system network protocol; (CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028, CVE-2025-40108, CVE-2025-40109) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 linux-image-6.17.0-1004-gcp 6.17.0-1004.4 linux-image-6.17.0-1004-gcp-64k 6.17.0-1004.4 linux-image-gcp 6.17.0-1004.4 linux-image-gcp-6.17 6.17.0-1004.4 linux-image-gcp-64k 6.17.0-1004.4 linux-image-gcp-64k-6.17 6.17.0-1004.4 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-7906-2 https://ubuntu.com/security/notices/USN-7906-1 CVE-2025-40025, CVE-2025-40026, CVE-2025-40027, CVE-2025-40028, CVE-2025-40108, CVE-2025-40109 Package Information: https://launchpad.net/ubuntu/+source/linux-gcp/6.17.0-1004.4
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