CVE-2026-99108

A flaw was found in the Linux kernel's NTFS file system implementation. This flaw may lead to data corruption or data loss when performing file system trim operations (FITRIM) to reclaim unused storage blocks. Due to an improper range alignment calculation when processing unaligned free space extents, discard requests can extend past the free area and into actively allocated clusters. A local user capable of issuing trim requests on an NTFS volume could cause allocated file system data to be overwritten or deleted.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.