CVE-2026-23404 (GCVE-0-2026-23404)
Vulnerability from cvelistv5 – Published: 2026-04-01 08:36 – Updated: 2026-04-01 08:36
VLAI?
Title
apparmor: replace recursive profile removal with iterative approach
Summary
In the Linux kernel, the following vulnerability has been resolved:
apparmor: replace recursive profile removal with iterative approach
The profile removal code uses recursion when removing nested profiles,
which can lead to kernel stack exhaustion and system crashes.
Reproducer:
$ pf='a'; for ((i=0; i<1024; i++)); do
echo -e "profile $pf { \n }" | apparmor_parser -K -a;
pf="$pf//x";
done
$ echo -n a > /sys/kernel/security/apparmor/.remove
Replace the recursive __aa_profile_list_release() approach with an
iterative approach in __remove_profile(). The function repeatedly
finds and removes leaf profiles until the entire subtree is removed,
maintaining the same removal semantic without recursion.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 33959a491e9fd557abfa5fce5ae4637d400915d3
(git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 999bd704b0b641527a5ed46f0d969deff8cfa68b (git) Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 7eade846e013cbe8d2dc4a484463aa19e6515c7f (git) Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < a6a941a1294ac5abe22053dc501d25aed96e48fe (git) Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < ab09264660f9de5d05d1ef4e225aa447c63a8747 (git) |
||
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}
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"url": "https://git.kernel.org/stable/c/ab09264660f9de5d05d1ef4e225aa447c63a8747"
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"cveId": "CVE-2026-23404",
"datePublished": "2026-04-01T08:36:35.032Z",
"dateReserved": "2026-01-13T15:37:46.012Z",
"dateUpdated": "2026-04-01T08:36:35.032Z",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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