Medium 5.5Published Jul 19, 2026

CVE-2026-64040cachefiles: Fix error return when vfs_mkdir() fails

Updated under an hour ago (Oct 26, 2026, 6:23 PM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed builds before 86f4c1586418d50203ee8d76cba5d7b148719a32; from 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed before 0940108d27c6995e02819ff832be11892f0b208b; 406fad7698f5bf21ab6b5ca195bf4b9e0b3990ed builds before 8a220d1c312c66194f4a33dd52d1fba42bc2b341	CNA record
linux linux_kernel linux:linux_kernel	from 6.15 before 7.0.11; 7.1; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/86f4c1586418d50203ee8d76cba5d7b148719a32
https://git.kernel.org/stable/c/0940108d27c6995e02819ff832be11892f0b208b	patch
https://git.kernel.org/stable/c/8a220d1c312c66194f4a33dd52d1fba42bc2b341	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.