Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ceba1832b1b2da0149c51de62a847c00bca1677a to < 1ad9166cab6a0f5c0b10344a97bdf749ae11dcbfaffectedceba1832b1b2da0149c51de62a847c00bca1677a to < 1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152affectedceba1832b1b2da0149c51de62a847c00bca1677a to < a7e89541d05b98c79a51c0f95df020f8e82b62edaffectedceba1832b1b2da0149c51de62a847c00bca1677a to < 797e5371cf55463b4530bab3fef5f27f7c6657a8affectedceba1832b1b2da0149c51de62a847c00bca1677a to < 1927d0bcd5b81e80971bf6b8eba267508bd1c78baffectedceba1832b1b2da0149c51de62a847c00bca1677a to < 3ba9cf69de50e8abed32b448616c313baa4c5712affectedceba1832b1b2da0149c51de62a847c00bca1677a to < 9fe3839588db7519030377b7dee3f165e654f6c5affectedceba1832b1b2da0149c51de62a847c00bca1677a to < 172a8a996a337206970467e871dd995ac07640b1affectedceba1832b1b2da0149c51de62a847c00bca1677a to < 078aabd567de3d63d37d7673f714e309d369e6e2affected
Linux Linux
Default version status: affected
4.8affected0 to < 4.8unaffected5.4.292 to ≤ 5.4.*unaffected5.10.236 to ≤ 5.10.*unaffected5.15.180 to ≤ 5.15.*unaffected6.1.134 to ≤ 6.1.*unaffected6.6.87 to ≤ 6.6.*unaffected6.12.23 to ≤ 6.12.*unaffected6.13.11 to ≤ 6.13.*unaffected6.14.2 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf ↗
- https://git.kernel.org/stable/c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152 ↗
- https://git.kernel.org/stable/c/a7e89541d05b98c79a51c0f95df020f8e82b62ed ↗
- https://git.kernel.org/stable/c/797e5371cf55463b4530bab3fef5f27f7c6657a8 ↗
- https://git.kernel.org/stable/c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b ↗
- https://git.kernel.org/stable/c/3ba9cf69de50e8abed32b448616c313baa4c5712 ↗
- https://git.kernel.org/stable/c/9fe3839588db7519030377b7dee3f165e654f6c5 ↗
- https://git.kernel.org/stable/c/172a8a996a337206970467e871dd995ac07640b1 ↗
- https://git.kernel.org/stable/c/078aabd567de3d63d37d7673f714e309d369e6e2 ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html ↗