{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53613", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T19:39:52.405Z", "datePublished": "2026-10-14T14:52:56.063Z", "dateUpdated": "2026-10-14T14:52:56.063Z"}, "containers": {"cna": {"title": "util-linux mount target TOCTOU allows local privilege escalation", "problemTypes": [{"descriptions": [{"cweId": "CWE-367", "lang": "en", "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition", "type": "CWE"}]}], "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"}}], "references": [{"name": "https://github.com/util-linux/util-linux/security/advisories/GHSA-8gj5-72r3-428g", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-8gj5-72r3-428g"}, {"name": "https://github.com/util-linux/util-linux/commit/0b010025a0e429bc80355c94db86a843395d49e2", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/0b010025a0e429bc80355c94db86a843395d49e2"}, {"name": "https://github.com/util-linux/util-linux/commit/0d3d55975aa3492c62fd345eac38f41cd166c0b0", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/0d3d55975aa3492c62fd345eac38f41cd166c0b0"}, {"name": "https://github.com/util-linux/util-linux/commit/2c773f336134acf016e639abb6f12ba7341fe4b8", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/2c773f336134acf016e639abb6f12ba7341fe4b8"}, {"name": "https://github.com/util-linux/util-linux/commit/39fef62bf3226abb6bb018fa8750afa0327e84b4", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/39fef62bf3226abb6bb018fa8750afa0327e84b4"}, {"name": "https://github.com/util-linux/util-linux/commit/472cc3fb2d4d47cca7aab2e0b59eb3fb8a9359ec", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/472cc3fb2d4d47cca7aab2e0b59eb3fb8a9359ec"}, {"name": "https://github.com/util-linux/util-linux/commit/646fb66603d10a7ac337e14f566f1af48e3107c9", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/646fb66603d10a7ac337e14f566f1af48e3107c9"}, {"name": "https://github.com/util-linux/util-linux/commit/708d1b3c51932dc5ba8082c7368187715e6a8d78", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/708d1b3c51932dc5ba8082c7368187715e6a8d78"}, {"name": "https://github.com/util-linux/util-linux/commit/78a860982e036f38fe9c0b3344998df5ac2c2ff5", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/78a860982e036f38fe9c0b3344998df5ac2c2ff5"}, {"name": "https://github.com/util-linux/util-linux/commit/85d16b341f7232c9dbb4884b632e1e956584bee9", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/85d16b341f7232c9dbb4884b632e1e956584bee9"}, {"name": "https://github.com/util-linux/util-linux/commit/a9508d216eb8977979102782672e0470cc9bf2a2", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/a9508d216eb8977979102782672e0470cc9bf2a2"}, {"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/v2.41.5"}, {"name": "https://github.com/util-linux/util-linux/releases/tag/v2.42.2", "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/v2.42.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/releases/tag/v2.42.4"}], "affected": [{"vendor": "util-linux", "product": "util-linux", "versions": [{"version": ">= 2.17, <= 2.41.6", "status": "affected"}, {"version": ">= 2.42, <= 2.42.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-14T14:52:56.063Z"}, "descriptions": [{"lang": "en", "value": "util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy `mount(2)` path is used without `/proc`, restricted non-root `mount` requests validate an `/etc/fstab` target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab `user` or `users` entry whose target has an attacker-writable ancestor can use `renameat2(RENAME_EXCHANGE)` to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over `/etc/sudoers.d`, and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through `/proc/self/fd`; the documented legacy fallback without `/proc` remains affected."}], "source": {"advisory": "GHSA-8gj5-72r3-428g", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "util-linux", "vendor": "util-linux", "versions": [{"status": "affected", "version": ">= 2.17, <= 2.41.6"}, {"status": "affected", "version": ">= 2.42, <= 2.42.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy `mount(2)` path is used without `/proc`, restricted non-root `mount` requests validate an `/etc/fstab` target before the mount operation re-resolves that pathname. A local low-privileged user authorized by an fstab `user` or `users` entry whose target has an attacker-writable ancestor can use `renameat2(RENAME_EXCHANGE)` to swap a path component and redirect an authorized mount to a root-owned location, such as mounting attacker-controlled content over `/etc/sudoers.d`, and thereby gain root privileges. Versions 2.41.5 and 2.42.2 pin targets for the new mount API, and 2.42.4 pins legacy targets through `/proc/self/fd`; the documented legacy fallback without `/proc` remains affected."}], "id": "CVE-2026-53613", "lastModified": "2026-10-14T15:17:20.410", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "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"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-14T15:17:20.410", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/0b010025a0e429bc80355c94db86a843395d49e2"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/0d3d55975aa3492c62fd345eac38f41cd166c0b0"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/2c773f336134acf016e639abb6f12ba7341fe4b8"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/39fef62bf3226abb6bb018fa8750afa0327e84b4"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/472cc3fb2d4d47cca7aab2e0b59eb3fb8a9359ec"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/646fb66603d10a7ac337e14f566f1af48e3107c9"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/708d1b3c51932dc5ba8082c7368187715e6a8d78"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/78a860982e036f38fe9c0b3344998df5ac2c2ff5"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/85d16b341f7232c9dbb4884b632e1e956584bee9"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/a9508d216eb8977979102782672e0470cc9bf2a2"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/releases/tag/v2.41.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/releases/tag/v2.42.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/releases/tag/v2.42.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-8gj5-72r3-428g"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}