{"id":"CVE-2025-38058","summary":"__legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock","details":"In the Linux kernel, the following vulnerability has been resolved:\n\n__legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock\n\n... or we risk stealing final mntput from sync umount - raising mnt_count\nafter umount(2) has verified that victim is not busy, but before it\nhas set MNT_SYNC_UMOUNT; in that case __legitimize_mnt() doesn't see\nthat it's safe to quietly undo mnt_count increment and leaves dropping\nthe reference to caller, where it'll be a full-blown mntput().\n\nCheck under mount_lock is needed; leaving the current one done before\ntaking that makes no sense - it's nowhere near common enough to bother\nwith.","modified":"2026-03-20T12:42:38.999899Z","published":"2025-06-18T09:33:38.022Z","related":["SUSE-SU-2025:02846-1","SUSE-SU-2025:02853-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:02969-1","SUSE-SU-2025:02996-1","SUSE-SU-2025:02997-1","SUSE-SU-2025:03011-1","SUSE-SU-2025:03023-1","SUSE-SU-2025:20577-1","SUSE-SU-2025:20586-1","SUSE-SU-2025:20601-1","SUSE-SU-2025:20602-1","SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38058.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/250cf3693060a5f803c5f1ddc082bb06b16112a9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/628fb00195ce21a90cf9e4e3d105cd9e58f77b40"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8cafd7266fa02e0863bacbf872fe635c0b9725eb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9b0915e72b3cf52474dcee0b24a2f99d93e604a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b55996939c71a3e1a38f3cdc6a8859797efc9083"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b89eb56a378b7b2c1176787fc228d0a57172bdd5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d8ece4ced3b051e656c77180df2e69e19e24edc1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6d45fd92f62845cbd1eb5128fd8f0ed7d0c5a42"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38058.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38058"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"48a066e72d970a3e225a9c18690d570c736fc455"},{"fixed":"628fb00195ce21a90cf9e4e3d105cd9e58f77b40"},{"fixed":"b89eb56a378b7b2c1176787fc228d0a57172bdd5"},{"fixed":"f6d45fd92f62845cbd1eb5128fd8f0ed7d0c5a42"},{"fixed":"9b0915e72b3cf52474dcee0b24a2f99d93e604a3"},{"fixed":"d8ece4ced3b051e656c77180df2e69e19e24edc1"},{"fixed":"8cafd7266fa02e0863bacbf872fe635c0b9725eb"},{"fixed":"b55996939c71a3e1a38f3cdc6a8859797efc9083"},{"fixed":"250cf3693060a5f803c5f1ddc082bb06b16112a9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38058.json"}}],"schema_version":"1.7.5"}