CVE-2026-23404 (GCVE-0-2026-23404)

Vulnerability from cvelistv5 – Published: 2026-04-01 08:36 – Updated: 2026-05-11 22:06
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 , < ea854f032190cc9f26dc4a0e727090c89e55e342 (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 4fdc847b107321dec22bf8ecd6019b7af76d7886 (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < b36a04284d0208be94e5e401409caa00e2bf1be1 (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 33959a491e9fd557abfa5fce5ae4637d400915d3 (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 999bd704b0b641527a5ed46f0d969deff8cfa68b (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < 7eade846e013cbe8d2dc4a484463aa19e6515c7f (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < a6a941a1294ac5abe22053dc501d25aed96e48fe (git)
Affected: c88d4c7b049e87998ac0a9f455aa545cc895ef92 , < ab09264660f9de5d05d1ef4e225aa447c63a8747 (git)
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Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.169 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.18 , ≤ 6.18.* (semver)
Unaffected: 6.19.8 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.



Detection rules are retrieved from Rulezet.