CVE-2025-71148 net/handshake: restore destructor on submit failure

In the Linux kernel, the following vulnerability has been resolved: net/handshake: restore destructor on submit failure handshakereqsubmit replaces sk-skdestruct but never restores it when submission fails before the request is hashed. handshakeskdestruct then returns early and the original...

CVE-2025-71148

CVE-2025-71148 affects the Linux kernel networking code (net/handshake). The issue: handshake_req_submit() overwrites sk->sk_destruct on submission, but does not restore it if an error occurs before hashing, causing handshake_sk_destruct() to return early and leak the socket. The fix is to res...