{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53615", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T19:39:52.405Z", "datePublished": "2026-10-14T15:56:45.310Z", "dateUpdated": "2026-10-14T15:56:45.310Z"}, "containers": {"cna": {"title": "util-linux libblkid DOS extended-partition overflow produces invalid partition metadata", "problemTypes": [{"descriptions": [{"cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/util-linux/util-linux/security/advisories/GHSA-h4rw-gv36-wmp5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-h4rw-gv36-wmp5"}, {"name": "https://github.com/util-linux/util-linux/commit/05c2dbadf34cc74192287f377904afaaf4061623", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/05c2dbadf34cc74192287f377904afaaf4061623"}, {"name": "https://github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31"}, {"name": "https://github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af"}, {"name": "https://github.com/util-linux/util-linux/releases/tag/v2.41.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/util-linux/util-linux/releases/tag/v2.41.4"}], "affected": [{"vendor": "util-linux", "product": "util-linux", "versions": [{"version": "< 2.41.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-14T15:56:45.310Z"}, "descriptions": [{"lang": "en", "value": "util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, `parse_dos_extended()` in `libblkid/src/partitions/dos.c` computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to the first two EBR entries. A local attacker who causes a crafted DOS extended-partition disk image or removable medium to be probed can wrap `cur_start + start` to sector zero and cause libblkid to report a false partition overlapping the MBR. This directly compromises the integrity of the reported partition metadata; disk modification or availability loss requires a separate downstream consumer to act on that metadata. This issue is fixed in 2.41.4."}], "source": {"advisory": "GHSA-h4rw-gv36-wmp5", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "util-linux", "vendor": "util-linux", "versions": [{"status": "affected", "version": "< 2.41.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, `parse_dos_extended()` in `libblkid/src/partitions/dos.c` computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to the first two EBR entries. A local attacker who causes a crafted DOS extended-partition disk image or removable medium to be probed can wrap `cur_start + start` to sector zero and cause libblkid to report a false partition overlapping the MBR. This directly compromises the integrity of the reported partition metadata; disk modification or availability loss requires a separate downstream consumer to act on that metadata. This issue is fixed in 2.41.4."}], "id": "CVE-2026-53615", "lastModified": "2026-10-14T16:17:46.070", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.5, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-14T16:17:46.070", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/05c2dbadf34cc74192287f377904afaaf4061623"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/a2d858176b609ab5b8535021a3af9cd302d23d31"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/commit/e9d544d013267ea86b70ee8ff78abd280e6641af"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/releases/tag/v2.41.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-h4rw-gv36-wmp5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}