CVE-2026-98627

A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem. When verifying packet pointer registers that share an identifier, the BPF verifier fails to preserve register displacement during state pruning. A local user with permission to load BPF programs could exploit this vulnerability by submitting a crafted program that bypasses verifier safety checks. This flaw permits out-of-bounds memory access, potentially leading to privilege escalation, kernel memory corruption, or a denial of service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.