CVE-2026-80519

In the Linux kernel, the following vulnerability has been resolved:

ovpn: finish crypto callback cleanup before peer release

Crypto completion callbacks hold both key-slot and peer references. The peer reference pins the netdev, and dropping the last peer reference can let netdev unregistration and module removal make progress.

Do not release that peer reference before the callback has finished its own cleanup. If ovpncryptokeyslotput runs after ovpnpeerput, it can schedule an RCU callback backed by module text after ovpncleanup rcubarrier has already run. The TX error path also freed the remaining skb after ovpnpeerput, leaving callback cleanup outside the peer/netdev lifetime window.

Release the key slot and free any remaining skb first, then drop the peer reference as the last callback action.