CVE-2026-53081 bpf: Enforce regsafe base id consistency for BPF_ADD_CONST scalars

In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce regsafe base id consistency for BPFADDCONST scalars When regsafe compares two scalar registers that both carry BPFADDCONST, checkscalarids maps their full compound id aka base | BPFADDCONST flag as one idmap entry...

PT-2026-51975

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Berkeley Packet Filter BPF verifier within the regsafe function. The issue occurs when comparing two scalar registers that both carry BPF ADD CONST values; the check...