CVE-2026-45915None▾ SunlitIn 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). r…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 7fe0de287e931e07cb96ecf1f449b2ebdb0e1115Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 9894c79fd9466612d0514be157b5c30cd93aa645Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < cd569b87378b9c33ae13c23d6bb9d205d66f7c4bLinux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < d3b7ffa90f613938128432c7b2f35b7aa4bdd86bLinux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 955c5d670b5ae07c78f4345e23a895638db96ce1Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 17866f8a0822d414cb02e621cf003a7d04396ef8Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < d0bb592fa9def2bace90ac8926c0a1d6fa8c1aa0Linux >= 9a53c3a783c2fa9b969628e65695c11c3e51e673 < 8cafcb881364af5ef3a8b9fed4db254054033d8aLinux 2.6.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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