VULNERABILITY INTELLIGENCE

CVE-2026-45915

CVSS score5.5 MEDIUM
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-05-27
Last modified2026-06-24
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: fat: avoid parent link count underflow in rmdir Corrupted FAT images can leave a directory inode with an incorrect i_nlink (e.g. 2 even though subdirectories exist). rmdir then unconditionally calls drop_nlink(dir) and can drive i_nlink to 0, triggering the WARN_ON in drop_nlink(). Add a sanity check in vfat_rmdir() and msdos_rmdir(): only drop the parent link count when it is at least 3, otherwise report a filesystem error.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references