CVE-2026-45915
Published: May 27, 2026
Modified: May 27, 2026
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 9a53c3a783c2fa9b969628e65695c11c3e51e673 - < 7fe0de287e931e07cb96ecf1f449b2ebdb0e1115affected 9a53c3a783c2fa9b969628e65695c11c3e51e673 - < 9894c79fd9466612d0514be157b5c30cd93aa645affected 9a53c3a783c2fa9b969628e65695c11c3e51e673 - < cd569b87378b9c33ae13c23d6bb9d205d66f7c4baffected 9a53c3a783c2fa9b969628e65695c11c3e51e673 - < d3b7ffa90f613938128432c7b2f35b7aa4bdd86baffected 9a53c3a783c2fa9b969628e65695c11c3e51e673 - < 955c5d670b5ae07c78f4345e23a895638db96ce1+3 more versions |
Linux | Linux | affected 2.6.19unaffected 0 - < 2.6.19unaffected 5.10.252 - <= 5.10.*unaffected 5.15.202 - <= 5.15.*unaffected 6.1.165 - <= 6.1.*+5 more versions |
References
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