CVE-2026-89581

A BPF x86 JIT flaw in the Linux kernel causes incorrect per-CPU address resolution when the destination is an extended register (R5–R9). The root cause is an encoding error: the REX prefix is built with add_1mod() (setting REX.B) instead of add_2mod() (setting REX.R), so the high register bit is ...

USN-5729-2 linux-gcp-5.15, linux-gke-5.15, linux-intel-iotg, linux-raspi vulnerabilities

It was discovered that a race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service system crash. CVE-2022-20422 Hsin-Wei Hung discovered that the BPF subsystem in the Linux kernel contained an...