Search: CVE-2026-63831

A vulnerability in the Linux kernel's mac802154 llsec subsystem allowed in-place cryptographic operations on shared socket buffer (skb) data without ensuring data uniqueness. This could cause silent data corruption, use-after-free errors, and kernel crashes under concurrent 802.15.4 traffic with security enabled. The issue was fixed by adding a call to skb_cow_data() before in-place crypto operations to ensure the skb data is not shared and safe to modify.