Multiple security vulnerabilities have been identified in the Linux kernel, which an attacker could potentially exploit to compromise the affected system. This update addresses issues across the following kernel subsystems:

• x86 architecture
• Cryptographic API
• InfiniBand drivers
• Media drivers
• STMicroelectronics network drivers
• Network drivers
• Ext4 file system
• IPv4 networking
• TCP network protocol
• Locking primitives
• Ceph Core library
• IPv6 networking
• Multipath TCP
• Netfilter
• SCTP protocol
• SMC sockets

Alert: This kernel update includes an unavoidable ABI change and has therefore been assigned a new version number. As a result, you will need to recompile and reinstall any third-party kernel modules currently installed on your system. If you have not manually removed the standard kernel metapackages (e.g., linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will handle this process automatically.

References: (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)