{"id":"CVE-2026-53614","state":"PUBLISHED","title":"util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass","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\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.","publishedAt":"2026-10-14T15:40:53.674Z","updatedAt":"2026-10-15T15:08:08.295Z","severity":{"score":7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["util-linux util-linux"],"affected":[{"vendor":"util-linux","product":"util-linux","versions":[{"version":">= 2.39.1, < 2.41.5","status":"affected"},{"version":">= 2.42, < 2.42.2","status":"affected"}]}],"references":["https://github.com/util-linux/util-linux/security/advisories/GHSA-67r7-8m5w-22wx","https://github.com/util-linux/util-linux/commit/31e37c1c7dcf25b76ccf41391fe934a75644c661","https://github.com/util-linux/util-linux/commit/53ff0fcdab12d69c60c971c69a3d0d173fa46ca9","https://github.com/util-linux/util-linux/commit/9cbfb823500f510b34767edabd3ffd5b436987b4","https://github.com/util-linux/util-linux/commit/cc81bbcec598cb91f0eb8456282f33eed820ed5f","https://github.com/util-linux/util-linux/commit/fd6b4d94ff013dc7ed680d4e864610da5b9751f1","https://github.com/util-linux/util-linux/releases/tag/v2.41.5","https://github.com/util-linux/util-linux/releases/tag/v2.42.2"],"weaknesses":["CWE-269","CWE-807"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53614.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53614","state":"PUBLISHED","datePublished":"2026-10-14T15:40:53.674Z","dateUpdated":"2026-10-15T15:08:08.295Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-09T19:39:52.405Z"},"containers":{"cna":{"title":"util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass","descriptions":[{"lang":"en","value":"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\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."}],"affected":[{"vendor":"util-linux","product":"util-linux","versions":[{"version":">= 2.39.1, < 2.41.5","status":"affected"},{"version":">= 2.42, < 2.42.2","status":"affected"}]}],"references":[{"url":"https://github.com/util-linux/util-linux/security/advisories/GHSA-67r7-8m5w-22wx","name":"https://github.com/util-linux/util-linux/security/advisories/GHSA-67r7-8m5w-22wx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/util-linux/util-linux/commit/31e37c1c7dcf25b76ccf41391fe934a75644c661","name":"https://github.com/util-linux/util-linux/commit/31e37c1c7dcf25b76ccf41391fe934a75644c661","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/commit/53ff0fcdab12d69c60c971c69a3d0d173fa46ca9","name":"https://github.com/util-linux/util-linux/commit/53ff0fcdab12d69c60c971c69a3d0d173fa46ca9","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/commit/9cbfb823500f510b34767edabd3ffd5b436987b4","name":"https://github.com/util-linux/util-linux/commit/9cbfb823500f510b34767edabd3ffd5b436987b4","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/commit/cc81bbcec598cb91f0eb8456282f33eed820ed5f","name":"https://github.com/util-linux/util-linux/commit/cc81bbcec598cb91f0eb8456282f33eed820ed5f","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/commit/fd6b4d94ff013dc7ed680d4e864610da5b9751f1","name":"https://github.com/util-linux/util-linux/commit/fd6b4d94ff013dc7ed680d4e864610da5b9751f1","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/releases/tag/v2.41.5","name":"https://github.com/util-linux/util-linux/releases/tag/v2.41.5","tags":["x_refsource_MISC"]},{"url":"https://github.com/util-linux/util-linux/releases/tag/v2.42.2","name":"https://github.com/util-linux/util-linux/releases/tag/v2.42.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269: Improper Privilege Management","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-807","lang":"en","description":"CWE-807: Reliance on Untrusted Inputs in a Security Decision","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-14T15:40:53.674Z"},"source":{"advisory":"GHSA-67r7-8m5w-22wx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T13:11:43.965210Z","id":"CVE-2026-53614","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T15:08:08.295Z"}}]}}}