CVE-2026-98315

ntfs: protect runlist updates with the runlist lock

State: Published
Severity: 7.8 High
Published: Oct 6, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

ntfs: protect runlist updates with the runlist lock

ntfs_non_resident_attr_shrink() calls runlist helpers that require the runlist write lock, but did not hold it while freeing clusters and truncating the runlist. Serialize those operations and the resident conversion with the runlist lock.

ntfs_attr_map_cluster() can merge a newly allocated run before updating mapping pairs. If the update fails, free the clusters and restore both the in-memory runlist and on-disk mapping pairs from a saved runlist. Mark the volume in error if either rollback step fails.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	495e90fa334828d4119061e2726af51d0a0fb4ed to before 742797432e8c9b0dd54ecc523c185e26b09d79a0Affected 495e90fa334828d4119061e2726af51d0a0fb4ed to before 91709ba5d6d709b2b663287b7e871e2c6b480502Affected
LinuxLinux	7.1Affected before 7.1Not affected 7.2.8 through 7.2.*Not affected 7.3 and laterNot affected

References

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