CVE-2026-23408

Description

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 ")

References

• 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