CVE-2026-43416

A flaw was found in the Linux kernel. A local user can cause a denial of service (DoS) by triggering a NULL pointer dereference within the perf subsystem. This occurs when the memory management structure (current->mm) is prematurely released before the system attempts to retrieve the user callchain, leading to a kernel panic. This vulnerability can be exploited by running a profiling BPF (Berkeley Packet Filter) program.

Red Hat acknowledges the upstream Linux kernel correction for «powerpc, perf» 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.