239 lines
9.7 KiB
JSON
239 lines
9.7 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-76642",
|
|
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "VulnCheck",
|
|
"dateReserved": "2026-08-19T14:53:58.575Z",
|
|
"datePublished": "2026-09-03T10:54:08.150Z",
|
|
"dateUpdated": "2026-09-03T14:00:29.374Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
|
|
"shortName": "VulnCheck",
|
|
"dateUpdated": "2026-09-03T10:54:08.150Z"
|
|
},
|
|
"datePublic": "2026-09-02T00:00:00.000Z",
|
|
"title": "util-linux libmount Privilege Escalation via Failed Mount Helper",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with inherited suid bits or modify target inode permissions after a helper fails, achieving privilege escalation."
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"description": "Detection of Error Condition Without Action",
|
|
"cweId": "CWE-390",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "util-linux",
|
|
"product": "util-linux",
|
|
"defaultStatus": "unaffected",
|
|
"packageURL": "pkg:github/util-linux/util-linux",
|
|
"versions": [
|
|
{
|
|
"version": "2.39",
|
|
"lessThan": "2.41.6",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
},
|
|
{
|
|
"version": "2.42",
|
|
"lessThan": "2.42.3",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.39",
|
|
"versionEndExcluding": "2.41.6"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.42",
|
|
"versionEndExcluding": "2.42.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"cvssV4_0": {
|
|
"version": "4.0",
|
|
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
|
|
"attackVector": "LOCAL",
|
|
"attackComplexity": "LOW",
|
|
"attackRequirements": "NONE",
|
|
"privilegesRequired": "LOW",
|
|
"userInteraction": "NONE",
|
|
"vulnConfidentialityImpact": "HIGH",
|
|
"vulnIntegrityImpact": "HIGH",
|
|
"vulnAvailabilityImpact": "HIGH",
|
|
"subConfidentialityImpact": "NONE",
|
|
"subIntegrityImpact": "NONE",
|
|
"subAvailabilityImpact": "NONE",
|
|
"baseScore": 8.5,
|
|
"baseSeverity": "HIGH"
|
|
}
|
|
},
|
|
{
|
|
"format": "CVSS",
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"attackVector": "LOCAL",
|
|
"attackComplexity": "LOW",
|
|
"privilegesRequired": "LOW",
|
|
"userInteraction": "NONE",
|
|
"scope": "UNCHANGED",
|
|
"confidentialityImpact": "HIGH",
|
|
"integrityImpact": "HIGH",
|
|
"availabilityImpact": "HIGH",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
}
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-m25x-3hj9-m26f",
|
|
"name": "GitHub Security Advisory (GHSA-m25x-3hj9-m26f)",
|
|
"tags": [
|
|
"vendor-advisory"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/commit/f57cea130839c0af8dc0525274267ae4cfd66bbf",
|
|
"name": "Patch Commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/commit/1d14676ea70003e9f5b2a6a76af0cadb1190411a",
|
|
"name": "Patch Commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/commit/a15c00a9e545aa8b9cf6ec0f888ff6c7b3eaeedc",
|
|
"name": "Patch Commit",
|
|
"tags": [
|
|
"patch"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/blob/v2.42.2/libmount/src/context_mount.c#L476",
|
|
"tags": [
|
|
"technical-description"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/blob/v2.42.2/libmount/src/context_mount.c#L892",
|
|
"tags": [
|
|
"technical-description"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux",
|
|
"tags": [
|
|
"product"
|
|
]
|
|
},
|
|
{
|
|
"name": "VulnCheck Advisory: util-linux libmount Privilege Escalation via Failed Mount Helper",
|
|
"tags": [
|
|
"third-party-advisory"
|
|
],
|
|
"url": "https://www.vulncheck.com/advisories/util-linux-libmount-privilege-escalation-via-failed-mount-helper"
|
|
}
|
|
],
|
|
"credits": [
|
|
{
|
|
"lang": "en",
|
|
"value": "Andreas Gabriel Berbescu",
|
|
"type": "reporter"
|
|
},
|
|
{
|
|
"lang": "en",
|
|
"value": "Ivan Redondo Plaza",
|
|
"type": "reporter"
|
|
}
|
|
],
|
|
"x_generator": {
|
|
"engine": "vulncheck-endgame"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"references": [
|
|
{
|
|
"url": "https://github.com/util-linux/util-linux/security/advisories/GHSA-m25x-3hj9-m26f",
|
|
"tags": [
|
|
"exploit"
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-09-03T14:00:22.814411Z",
|
|
"id": "CVE-2026-76642",
|
|
"options": [
|
|
{
|
|
"Exploitation": "poc"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-09-03T14:00:29.374Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |