CVE-2026-45892

A flaw was found in the Linux kernel's ext4 filesystem. This vulnerability occurs during certain buffered write operations when splitting unwritten data blocks, known as extents. A logic error can lead to an inconsistency where the filesystem's internal record of data blocks (the extent status tree) incorrectly marks an extent as unwritten, even though the data on disk has been written. This inconsistency could potentially lead to data integrity issues or unexpected filesystem behavior.

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.