CVE-2026-53111

A flaw was found in the Linux kernel. The bpflwtxmitpushencap 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 bpflwtpushipencap functio...

CVE-2026-53111

CVE-2026-53111 is a Linux kernel issue where bpf_lwt_xmit_push_encap dereferences skb_dst(skb)->dev during test_run when skb->_skb_refdst is uninitialized, leading to a kernel crash. A patch and remediation include initializing skb->_skb_refdst before bpf_test_run_skb, as evidenced by Ro...