{"id":"CVE-2026-53614","title":"util-linux is a random collection of Linux utilities","summary":"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()`, allow…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-269","CWE-807"],"vendor":"util-linux","product":"util-linux","affected":["util-linux >= 2.39.1, < 2.41.5","util-linux >= 2.42, < 2.42.2"],"published":"2026-10-14","updated":"2026-10-16","sourceUpdated":"2026-10-16T16:00:33.533","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53614","references":[{"url":"https://github.com/util-linux/util-linux/commit/31e37c1c7dcf25b76ccf41391fe934a75644c661","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/commit/53ff0fcdab12d69c60c971c69a3d0d173fa46ca9","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/commit/9cbfb823500f510b34767edabd3ffd5b436987b4","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/commit/cc81bbcec598cb91f0eb8456282f33eed820ed5f","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/commit/fd6b4d94ff013dc7ed680d4e864610da5b9751f1","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/releases/tag/v2.41.5","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/releases/tag/v2.42.2","label":"security-advisories@github.com"},{"url":"https://github.com/util-linux/util-linux/security/advisories/GHSA-67r7-8m5w-22wx","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53614.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-53614"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519648"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53614"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53614"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00133,"epssPercentile":0.02814,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T13:11:43.965210Z"},"ingestedAt":"2026-10-14T16:40:32.125Z","slug":"CVE-2026-53614","body":"## Overview\n\nutil-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\nuser 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53614.json)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}