USN-8634-1: Linux kernel vulnerabilities

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;
- InfiniBand drivers;
- Media drivers;
- STMicroelectronics network drivers;
- Network drivers;
- Ext4 file system;
- IPv4 networking;
- TCP network protocol;
- Locking primitives;
- B.A.T.M.A.N. meshing protocol;
- Ceph Core library;
- IPv6 networking;
- Multipath TCP;
- Netfilter;
- SCTP protocol;
- SMC sockets;
(CVE-2026-31405, CVE-2026-31414, CVE-2026-31448, CVE-2026-31649,
CVE-2026-31659, CVE-2026-31685, CVE-2026-43198, CVE-2026-43493,
CVE-2026-43499, CVE-2026-46266, CVE-2026-52955, CVE-2026-52982,
CVE-2026-52986, CVE-2026-53176, CVE-2026-53225, CVE-2026-53359)