CVE-2026-53111
kernel: bpf: test_run: Fix the null pointer dereference issue in bpf_lwt_xmit_push_encap
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 24, 2026
Updated · July 24, 2026
Description
A flaw was found in the Linux kernel. The bpf_lwt_xmit_push_encap helper in the Berkeley Packet Filter (BPF) subsystem attempts to access an uninitialized network device structure during certain test runs. A local user can exploit this null pointer dereference by executing the bpf_lwt_push_ip_encap function, which leads to a kernel crash and results in a Denial of Service (DoS).
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-824 · Access of Uninitialized Pointer