Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6442-1 | util-linux security update |
Ubuntu USN |
USN-8702-1 | util-linux vulnerabilities |
Thu, 15 Oct 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 14 Oct 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID `mount` utility's `hook_owner.c` post-mount hook performs path-based `chmod()` and `lchown()` operations on a previously validated mount target. A local low-privileged user authorized by an `/etc/fstab` entry with `user` or `users` and an `X-mount.mode`, `X-mount.owner`, or `X-mount.group` option can use `renameat2(RENAME_EXCHANGE)` to race a writable ancestor of the target and redirect the privileged ownership or mode change to a root-owned path, potentially gaining root privileges. This issue is fixed in 2.41.5 and 2.42.2. | |
| Title | util-linux mount hook_owner TOCTOU allows local privilege escalation | |
| Weaknesses | CWE-367 | |
| References |
|
|
| Metrics |
cvssV3_1
|
Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-14T18:26:36.386Z
Reserved: 2026-06-09T19:39:52.405Z
Link: CVE-2026-53612
Updated: 2026-10-14T18:26:09.495Z
Status : Received
Published: 2026-10-14T15:17:20.260
Modified: 2026-10-14T19:17:17.210
Link: CVE-2026-53612
No data.
OpenCVE Enrichment
Updated: 2026-10-15T02:00:12Z

Debian DSA
Ubuntu USN