CVE-2026-98149

A flaw was found in the Linux kernel's BPF (Berkeley Packet Filter) subsystem. When updating per-CPU maps on systems configured with non-contiguous CPU identifiers, the kernel incorrectly calculates memory offsets using logical processor IDs instead of dense buffer positions. A local user can exploit this issue to trigger an out-of-bounds memory read, potentially leading to data disclosure or a system crash resulting in 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.