{"id":"CVE-2026-98279","published":"2026-10-06T09:18:17.783","lastModified":"2026-10-06T09:18:17.783","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: handle lack of space when cleaning up verity items\n\nWhen enable_verity() hits the qgroup limit, rollback_verity() needs its\nown metadata reservation. When the qgroup limit or lack of space refuses\nthe rollback, the whole filesystem is forced read-only even though the\nqgroup limit was for one subvolume only. Also orphan cleanup at the next\nmount fails the same way, so the leftover items are never removed: with\n-EDQUOT the subvolume stays unreachable, and with -ENOSPC on a full\nfilesystem the next read-write mount fails.\n\nStart transactions with btrfs_start_transaction_fallback_global_rsv() in\nbtrfs_orphan_cleanup(), drop_verity_items() and rollback_verity(). Those\ncalls only delete items and free the space in the end, so they may use\nthe global reserve and skip the qgroup limit, which avoids -ENOSPC and\n-EDQUOT.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/4b7ecabd87dc40998fe7870d7975279649229a3b","tags":[]},{"url":"https://git.kernel.org/stable/c/76bf149cd0298544631e756670b89c399c7acbca","tags":[]},{"url":"https://git.kernel.org/stable/c/efa5780b84f066f419a667f6b9542368b2f62074","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}