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Change History

In the Linux kernel, the following vulnerability has been resolved:

apparmor: Fix double free of ns_name in aa_replace_profiles()

if ns_name is NULL after
1071         error = aa_unpack(udata, &lh, &ns_name);

and if ent->ns_name contains an ns_name in
1089                 } else if (ent->ns_name) {

then ns_name is assigned the ent->ns_name
1095                         ns_name = ent->ns_name;

however ent->ns_name is freed at
1262                 aa_load_ent_free(ent);

and then again when freeing ns_name at
1270         kfree(ns_name);

Fix this by NULLing out ent->ns_name after it is transferred to ns_name

")

https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b

https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a

https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502

https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387

https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45