Security
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CVE-2026-98139

MEDIUMCVSS 5.5
Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: only count successfully cleared runs when freeing clusters ntfs_cluster_free_from_rl_nolock() adds a run's length to nr_freed whenever the error bookkeeping condition is false, which includes cases where ntfs_bitmap_clear_run() actually failed - e.g. a second run failing with the same errno as an earlier one, or any failure after a non-ENOMEM error was already recorded. Since a failed ntfs_bitmap_clear_run() rolls back its partial modifications, no bits were cleared for that run, yet its length still inflates vol->free_clusters, corrupting statfs output and the allocator's free space gate. Only count runs whose bitmap clear succeeded.

Timeline
Published:September 25th, 2026 11:17 AM
Last modified:October 19th, 2026 10:18 AM
CVSS Scoring

CVSS v3: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Software
From NVD CPE configuration data

Vendors

linux

Products

linux_kernel

Source: NIST NVD · Data may lag official sources by up to one minute