CVE-2024-46721

Local kernel crash via AppArmor profile replacement

Published Sep 18, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux AppArmor 6.2 through 6.6.49 and 6.7 through 6.10.8 allows local users to crash the kernel via a profile update. When aa_replace_profiles creates a missing ancestor whose old entry is NULL, aafs_create dereferences the absent AAFS_PROF_DIR parent dentry instead of returning -ENOENT. Reaching the flaw requires local access and an AppArmor profile update; the reported consequence is a kernel oops that can interrupt the host.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux AppArmor 6.2 through 6.6.49 and 6.7 through 6.10.8 allows local users to crash the kernel via a profile update. When aa_replace_profiles creates a missing ancestor whose old entry is NULL, aafs_create dereferences the absent AAFS_PROF_DIR parent dentry instead of returning -ENOENT. Reaching the flaw requires local access and an AppArmor profile update; the reported consequence is a kernel oops that can interrupt the host.

The record

CVE
CVE-2024-46721
Published
Sep 18, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 18, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.2
  2. Affected versionversion=665b1856dc2399828d8ee07a18d4fd79868e729a <3dd384108d53834002be5630132ad5c3f32166ad
  3. Affected versionversion=665b1856dc2399828d8ee07a18d4fd79868e729a <59f742e55a469ef36c5c1533b6095a103b61eda8
  4. Affected versionversion=665b1856dc2399828d8ee07a18d4fd79868e729a <c49bbe69ee152bd9c1c1f314c0f582e76c578f64

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=665b1856dc2399828d8ee07a18d4fd79868e729a <3dd384108d53834002be5630132ad5c3f32166ad; version=665b1856dc2399828d8ee07a18d4fd79868e729a <59f742e55a469ef36c5c1533b6095a103b61eda8; version=665b1856dc2399828d8ee07a18d4fd79868e729a <c49bbe69ee152bd9c1c1f314c0f582e76c578f64

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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