Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 11ccc9107dc460de28af90fac1f42404d9802735 before 7eb97d8828e7758b9c81277f7802e740a800f78a; affected 11ccc9107dc460de28af90fac1f42404d9802735 before be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e |
| Linux / Linux | affected 7.1; unaffected 0 before 7.1; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.