CVE-2026-23408

apparmor: Fix double free of ns_name in aa_replace_profiles()

State
Published
Severity
7.8 High
Published
Apr 1, 2026
Updated
Aug 5, 2026
Reserved
Jan 13, 2026

Read the record on cve.org

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

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689Affected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before c053ae381ce227577567d1ef10090ce7506d7a28Affected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 35f4caec1352054b9a61cfdf2bf1898073637aa0Affected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162aAffected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 86feeccd6b93ed94bd6655f30de80f163f8d5a45Affected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 7998ab3010d2317643f91828f1853d954ef31387Affected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 18b5233e860c294a847ee07869d93c0b8673a54bAffected
  • 145a0ef21c8e944957f58e2c8ffcd8a10f46266a to before 5df0c44e8f5f619d3beb871207aded7c78414502Affected
LinuxLinux
  • 5.5Affected
  • before 5.5Not affected
  • 5.10.253 through 5.10.*Not affected
  • 5.15.203 through 5.15.*Not affected
  • 6.1.169 through 6.1.*Not affected
  • 6.6.130 through 6.6.*Not affected
  • 6.12.77 through 6.12.*Not affected
  • 6.18.18 through 6.18.*Not affected
  • 6.19.8 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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