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CVE-2026-64040

cachefiles: Fix error return when vfs_mkdir() fails

Medium5.5EPSS 0.16%
Published
Updated
Reserved
Assigned by
Linux

Description

In 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.

Scores

CVSS scores of CVE-2026-64040, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.16% · top 95% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

Affected products

  • Linux · Linux

    • affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed – < 86f4c1586418d50203ee8d76cba5d7b148719a32
    • affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed – < 0940108d27c6995e02819ff832be11892f0b208b
    • affected 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed – < 8a220d1c312c66194f4a33dd52d1fba42bc2b341

  • Linux · Linux

    • affected 6.15
    • unaffected < 6.15
    • unaffected 6.18.57 – ≤ 6.18.*
    • unaffected 7.0.11 – ≤ 7.0.*
    • unaffected 7.1 – ≤ *

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .