apparmor: fix NULL sock in aa_sock_file_perm

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45848
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:16:56 UTC
Updated2026-06-25 21:03:46 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: apparmor: fix NULL sock in aa_sock_file_perm Deal with the potential that sock and sock-sk can be NULL during socket setup or teardown. This could lead to an oops. The fix for NULL pointer dereference in __unix_needs_revalidation shows this is at least possible for af_unix sockets. While the fix for af_unix sockets applies for newer mediation this is still the fall back path for older af_unix mediation and other sockets, so ensure it is covered.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000240000 probability, percentile 0.073320000 (date 2026-06-01)

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 68538ec34fcb4194c7961dc4eca6f5537fec8067 git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 5121b7283f1c46e4c06b88b1dda7b064429d77de git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 c11b7c3280d000376e27ebfed17ec7046699eab4 git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 0dc19bca22606f7a61d5988408f74e3ae0ef3486 git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 3852eb9a0392eb435c03dcb47d581bcfe6a9a95b git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 8a0ededbfcff74598f82f1d4b8ef9db28878b317 git Not specified
CNA Linux Linux affected 56974a6fcfef69ee0825bd66ed13e92070ac5224 00b67657535dfea56e84d11492f5c0f61d0af297 git Not specified
CNA Linux Linux affected 4.17 Not specified
CNA Linux Linux unaffected 4.17 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0dc19bca22606f7a61d5988408f74e3ae0ef3486 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5121b7283f1c46e4c06b88b1dda7b064429d77de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/68538ec34fcb4194c7961dc4eca6f5537fec8067 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/00b67657535dfea56e84d11492f5c0f61d0af297 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ccb66a3c6c8f51b3ed1bc003b70bb9ff99e8d835 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8a0ededbfcff74598f82f1d4b8ef9db28878b317 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c11b7c3280d000376e27ebfed17ec7046699eab4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3852eb9a0392eb435c03dcb47d581bcfe6a9a95b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report