CVE-2026-23408

HIGH

apparmor: Fix double free of ns_name in aa_replace_profiles()

Title source: cna
STIX 2.1

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 ")

Scores

CVSS v3 7.8
EPSS 0.0001
EPSS Percentile 0.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (19)
Linux/Linux < 5.5
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 18b5233e860c294a847ee07869d93c0b8673a54b
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 35f4caec1352054b9a61cfdf2bf1898073637aa0
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 5df0c44e8f5f619d3beb871207aded7c78414502
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 7998ab3010d2317643f91828f1853d954ef31387
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - 86feeccd6b93ed94bd6655f30de80f163f8d5a45
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - c053ae381ce227577567d1ef10090ce7506d7a28
Linux/Linux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a - c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689
Linux/Linux 5.10.253 - 5.10.*
... and 9 more
Published Apr 01, 2026
Tracked Since Apr 01, 2026