High 7.8Published Apr 1, 2026

CVE-2026-23408apparmor: Fix double free of ns_name in aa_replace_profiles()

Updated under an hour ago (Oct 27, 2026, 7:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 ")

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 145a0ef21c8e944957f58e2c8ffcd8a10f46266a before c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689; from 145a0ef21c8e944957f58e2c8ffcd8a10f46266a before c053ae381ce227577567d1ef10090ce7506d7a28; 145a0ef21c8e944957f58e2c8ffcd8a10f46266a builds before 35f4caec1352054b9a61cfdf2bf1898073637aa0; 145a0ef21c8e944957f58e2c8ffcd8a10f46266a builds before 55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a; 145a0ef21c8e944957f58e2c8ffcd8a10f46266a builds before 86feeccd6b93ed94bd6655f30de80f163f8d5a45; from 145a0ef21c8e944957f58e2c8ffcd8a10f46266a before 7998ab3010d2317643f91828f1853d954ef31387; 145a0ef21c8e944957f58e2c8ffcd8a10f46266a builds before 18b5233e860c294a847ee07869d93c0b8673a54b; 145a0ef21c8e944957f58e2c8ffcd8a10f46266a builds before 5df0c44e8f5f619d3beb871207aded7c78414502	CNA record
linux linux_kernel linux:linux_kernel	from 5.5.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.130; from 6.7 before 6.12.77; from 6.13 before 6.18.18; from 6.19 before 6.19.8; 5.5; and 7 more ranges	NVD

References

References

https://git.kernel.org/stable/c/c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689	patch
https://git.kernel.org/stable/c/c053ae381ce227577567d1ef10090ce7506d7a28	patch
https://git.kernel.org/stable/c/35f4caec1352054b9a61cfdf2bf1898073637aa0	patch
https://git.kernel.org/stable/c/55ef2af7490aaf72f8ffe11ec44c6bcb7eb2162a	patch
https://git.kernel.org/stable/c/86feeccd6b93ed94bd6655f30de80f163f8d5a45	patch
https://git.kernel.org/stable/c/7998ab3010d2317643f91828f1853d954ef31387	patch
https://git.kernel.org/stable/c/18b5233e860c294a847ee07869d93c0b8673a54b	patch
https://git.kernel.org/stable/c/5df0c44e8f5f619d3beb871207aded7c78414502	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.