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Medium severity5.5NVD Advisory· Published Jul 19, 2026· Updated Oct 15, 2026

CVE-2026-64040

CVE-2026-64040

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.

Affected products

7
  • Linux/Kernel6 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.15,<7.0.11
    • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
    • (no CPE)
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.15.0, < 6.18.57

Patches

Vulnerability mechanics

References

3

News mentions

0

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