Ubuntu OEM Linux Kernel Security Bulletin: Multiple CVE Fixes (USN-8911-1)

Vulnerability Overview Vulnerability ID: USN-8911-1 Publication Date: October 9, 2026 Description: Multiple security issues were discovered in the Linux kernel (OEM). An attacker could leverage these issues to compromise the system. Scope of Impact Affected Subsystems: - Hardware encryption device drivers - NVIDIA Tegra memory controller drivers - Network drivers - USB core drivers - GFS2 filesystem - OCF52 filesystem - SMB network filesystem - SoundWire (SDCA) ASoc drivers - B.A.T.M.A.N. meshing protocol - Ceph Core library - IPv4 networking - IPv6 networking - Netfilter - Open vSwitch - RxRPC session sockets - SCTP protocol - TIPC protocol Remediation Update Notes: - A system restart is required after a standard system update to apply all necessary changes. - Due to inevitable ABI changes, the kernel update has been assigned a new version number. Consequently, all third-party kernel modules must be recompiled and reinstalled. - Unless the standard kernel meta-packages (such as , , , ) are manually removed, this process will be executed automatically during a standard system upgrade. Updated Package Versions: - Ubuntu 24.04 LTS (noble): - – 6.17.0-1033.33 - – 6.17.0-1033.33 - – 6.17.0-1033.33 - – 6.17.0-1033.33 - – 6.17.0-1033.33 - – 6.17.0-1033.33 - – 6.17.0-1033.33 References CVE-2026-68372 CVE-2026-64531 CVE-2026-53309 CVE-2026-53260 CVE-2026-53247 CVE-2026-53246 CVE-2026-53224 CVE-2026-53216 CVE-2026-53215 CVE-2026-53175 Related Advisories USN-8906-1 USN-8888-1 USN-8888-2 USN-8887-1 USN-8887-2 USN-8887-3 USN-8879-1 USN-8878-1 USN-8871-1 USN-8850-1 Risk Mitigation Ubuntu Pro provides ten years of security coverage for packages across over 25,000 main and universe repositories. It is available for free for up to five machines. Additional Information Contact Team: For further questions, please contact the team member. Footer Information: Includes links to products such as OpenStack, Ceph, and Kubernetes, as well as trademarks for Ubuntu and Canonical.

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Ubuntu OEM Linux Kernel Security Bulletin: Multiple CVE Fixes (USN-8911-1)