CVE-2026-43306

A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) crypto component. A local attacker, by running a specially crafted BPF program, could trigger a type mismatch in function pointers when Control Flow Integrity (CFI) is enabled. This can lead to a kernel internal error, resulting in a system crash and a Denial of Service (DoS).

Red Hat acknowledges the upstream Linux kernel correction for «bpf» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

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.