CVE-2025-22063

In the Linux kernel, the following vulnerability has been resolved: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets When calling netlbl_conn_setattr(), addr->sa_family is used to determine the function behavior. If sk is an IPv4 socket, but the connect function is called with an IPv6 address, the function calipso_sock_setattr() is triggered. Inside this function, the following code is executed: sk_fullsock(__sk) ? inet_sk(__sk)->pinet6 : NULL; Since sk is an IPv4 socket, pinet6 is NULL, leading to a null pointer dereference. This patch fixes the issue by checking if inet6_sk(sk) returns a NULL pointer before accessing pinet6.

• linux linux kernel (>= 4.8 < 5.4.292) • linux linux kernel (>= 5.5 < 5.10.236) • linux linux kernel (>= 5.11 < 5.15.180) • linux linux kernel (>= 5.16 < 6.1.134) • linux linux kernel (>= 6.2 < 6.6.87) • linux linux kernel (>= 6.7 < 6.12.23) • linux linux kernel (>= 6.13 < 6.13.11) • linux linux kernel (>= 6.14 < 6.14.2)