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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.

PUBLISHED Reserved 2024-12-29 | Published 2025-04-16 | Updated 2026-05-11 | Assigner Linux

Product status

Default status
unaffected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before a7e89541d05b98c79a51c0f95df020f8e82b62ed
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 797e5371cf55463b4530bab3fef5f27f7c6657a8
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 1927d0bcd5b81e80971bf6b8eba267508bd1c78b
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 3ba9cf69de50e8abed32b448616c313baa4c5712
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 9fe3839588db7519030377b7dee3f165e654f6c5
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 172a8a996a337206970467e871dd995ac07640b1
affected

ceba1832b1b2da0149c51de62a847c00bca1677a (git) before 078aabd567de3d63d37d7673f714e309d369e6e2
affected

Default status
affected

4.8
affected

Any version before 4.8
unaffected

5.4.292 (semver)
unaffected

5.10.236 (semver)
unaffected

5.15.180 (semver)
unaffected

6.1.134 (semver)
unaffected

6.6.87 (semver)
unaffected

6.12.23 (semver)
unaffected

6.13.11 (semver)
unaffected

6.14.2 (semver)
unaffected

6.15 (original_commit_for_fix)
unaffected

References

lists.debian.org/debian-lts-announce/2025/05/msg00045.html

lists.debian.org/debian-lts-announce/2025/05/msg00030.html

git.kernel.org/...c/1ad9166cab6a0f5c0b10344a97bdf749ae11dcbf

git.kernel.org/...c/1e38f7a6cdd68377f8a4189b2fbaec14a6dd5152

git.kernel.org/...c/a7e89541d05b98c79a51c0f95df020f8e82b62ed

git.kernel.org/...c/797e5371cf55463b4530bab3fef5f27f7c6657a8

git.kernel.org/...c/1927d0bcd5b81e80971bf6b8eba267508bd1c78b

git.kernel.org/...c/3ba9cf69de50e8abed32b448616c313baa4c5712

git.kernel.org/...c/9fe3839588db7519030377b7dee3f165e654f6c5

git.kernel.org/...c/172a8a996a337206970467e871dd995ac07640b1

git.kernel.org/...c/078aabd567de3d63d37d7673f714e309d369e6e2

cve.org (CVE-2025-22063)

nvd.nist.gov (CVE-2025-22063)

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