cachefiles: Fix error return when vfs_mkdir() fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64040
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:44 UTC
Updated2026-10-15 11:17:38 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix error return when vfs_mkdir() fails When vfs_mkdir() fails, the error code is not extracted from the returned error pointer. This causes mkdir_error to be reached with ret=0, which leads to returning ERR_PTR(0) (NULL) instead of a proper error pointer. Fix this by extracting the error code from the error pointer when vfs_mkdir() fails.

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: 0.001980000 probability, percentile 0.087020000 (date 2026-10-06)

Problem Types: CWE-252

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
Operating System Linux Linux Kernel 7.1 rc1 All All
Operating System Linux Linux Kernel 7.1 rc2 All All
Operating System Linux Linux Kernel 7.1 rc3 All All
Operating System Linux Linux Kernel 7.1 rc4 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed 86f4c1586418d50203ee8d76cba5d7b148719a32 git Not specified
CNA Linux Linux affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed 0940108d27c6995e02819ff832be11892f0b208b git Not specified
CNA Linux Linux affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed 8a220d1c312c66194f4a33dd52d1fba42bc2b341 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.57 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/86f4c1586418d50203ee8d76cba5d7b148719a32 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0940108d27c6995e02819ff832be11892f0b208b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8a220d1c312c66194f4a33dd52d1fba42bc2b341 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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