Description
In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless.
Product status
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before cffca7a18b8f9de7c3d3013a1f5740c412b2a501
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before 7ef97d4675b05a103648bd9244d91dff7d8c08b0
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before e16859f3f4426fa349bc5519d582a93d28f5a15d
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before 914c6456fcfc21a3d553945dff62fd1621d6155d
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before 3ac6db584d9d420267bb8413115707eeec76d9cf
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before 63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before a4b191ddc12c55ddb62feb096536f819f384d6f1
43e3692101086add8719c3b8b50b05c9ac5b14e1 (git) before f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8
3.0
Any version before 3.0
5.10.258 (semver)
5.15.209 (semver)
6.1.175 (semver)
6.6.140 (semver)
6.12.86 (semver)
6.18.27 (semver)
7.0.4 (semver)
7.1-rc1 (original_commit_for_fix)
References
git.kernel.org/...c/cffca7a18b8f9de7c3d3013a1f5740c412b2a501
git.kernel.org/...c/7ef97d4675b05a103648bd9244d91dff7d8c08b0
git.kernel.org/...c/e16859f3f4426fa349bc5519d582a93d28f5a15d
git.kernel.org/...c/914c6456fcfc21a3d553945dff62fd1621d6155d
git.kernel.org/...c/3ac6db584d9d420267bb8413115707eeec76d9cf
git.kernel.org/...c/63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9
git.kernel.org/...c/a4b191ddc12c55ddb62feb096536f819f384d6f1
git.kernel.org/...c/f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8