CVE-2026-80520 ovpn: fix NULL dereference when killing missing key

In the Linux kernel, the following vulnerability has been resolved: ovpn: fix NULL dereference when killing missing key ovpncryptokillkey assumes both crypto slots are populated and dereferences each slot before checking it. That is not guaranteed: a peer can have only one installed key, and the...

CVE-2026-80520

A NULL pointer dereference in the Linux kernel's ovpn (OpenVPN) module can lead to a denial of service (CVSS 3.1: 7.5, HIGH). The function ovpn_crypto_kill_key assumes both crypto slots are populated and dereferences each before checking for NULL. Since a peer can have only one installed key, the...