7.0
High
CVE-2026-53614 util-linux is a random collection of Linux utilities
Description
util-linux is a random collection of Linux utilities. In util-linux 2.39.1 through 2.41.4 and 2.42 through 2.42.1, the SUID `mount` utility reads the attacker-controlled `LIBMOUNT_FORCE_MOUNT2` environment variable with `getenv()`, allowing a local low-privileged user to force the non-atomic legacy bind-mount path. With an `/etc/fstab` bind mount authorized by `user` or `users` and protected by `nosuid`, `noexec`, or `nodev`, an attacker can race the window between the initial bind mount and the remount that applies those security flags and execute a SUID program from the temporarily unprotected mount, potentially gaining root privileges. This issue is fixed in 2.41.5 and 2.42.2.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| util-linux 2.42 | 2.42 → < 2.42.2 | 2.42.2 |
| util-linux 2.39 | 2.39.1 → < 2.41.5 | 2.41.5 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of util-linux
The 7 CVEs of util-linux →
CVE-2026-53615
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CVE-2026-53613
util-linux is a random collection of Linux utilities
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CVE-2026-53612
util-linux is a random collection of Linux utilities
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CVE-2026-76642
util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks,…
8.5
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