USN-8615-2: Linux kernel (Raspberry Pi) vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP
subsystem in the Linux kernel when handling socket buffer fragments. This
flaw is known as Fragnesia. A local attacker could use this to escalate
privileges, or possibly escape a container. (CVE-2026-43503)

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:
- InfiniBand drivers;
- STMicroelectronics network drivers;
- NVME drivers;
- SCSI subsystem;
- USB over IP driver;
- Network file system (NFS) server daemon;
- SMB network file system;
- Tracing infrastructure;
- B.A.T.M.A.N. meshing protocol;
- Ethernet bridge;
- Ceph Core library;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- RxRPC session sockets;
- X.25 network layer;
(CVE-2026-23272, CVE-2026-23455, CVE-2026-31402, CVE-2026-31418,
CVE-2026-31607, CVE-2026-31637, CVE-2026-31649, CVE-2026-31659,
CVE-2026-31682, CVE-2026-31685, CVE-2026-43011, CVE-2026-43037,
CVE-2026-43038, CVE-2026-43117, CVE-2026-43383, CVE-2026-43407,
CVE-2026-43414, CVE-2026-45988, CVE-2026-46043, CVE-2026-46119,
CVE-2026-46135, CVE-2026-46243)