CVE-2026-89581

CVE-2026-89581 is a Linux kernel BPF x86 backend bug where the REX prefix is incorrectly built with add_1mod() (setting REX.B) instead of add_2mod() (setting REX.R) when encoding per-CPU address MOV instructions targeting extended registers (R5, R7, R8, R9). The lost high register bit causes reso...

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...