CVE-2026-98139 - ntfs: only count successfully cleared runs when freeing clusters

CVE-2026-98139 - ntfs: only count successfully cleared runs when freeing clusters

https://cvefeed.io/rssfeed/latest.atom / Fri, 09/25/2026 - 13:49
CVE ID :CVE-2026-98139
Published : Sept. 25, 2026, 10:36 a.m. | 35 minutes ago
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.
Severity: 0.0 | NA
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