CVE-2026-45915
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-27
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 7fe0de287e931e07cb96ecf1f449b2ebdb0e1115 |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 9894c79fd9466612d0514be157b5c30cd93aa645 |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < cd569b87378b9c33ae13c23d6bb9d205d66f7c4b |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < d3b7ffa90f613938128432c7b2f35b7aa4bdd86b |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 955c5d670b5ae07c78f4345e23a895638db96ce1 |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 17866f8a0822d414cb02e621cf003a7d04396ef8 |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0 |
| Linux | Linux | 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 8cafcb881364af5ef3a8b9fed4db254054033d8a |
| Linux | Linux | 2.6.19 |
| linux | linux_kernel | 2.6.19 – 5.10.252 |