FKIE_CVE-2014-9717
Vulnerability from fkie_nvd - Published: 2016-05-02 10:59 - Updated: 2026-06-17 00:18
Severity
Summary
fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D460F925-66B4-4BED-BD3B-91A8C60B8AC4",
"versionEndIncluding": "4.0.1",
"vulnerable": true
}
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"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace."
},
{
"lang": "es",
"value": "fs/namespace.c en el kernel de Linux en versiones anteriores a 4.0.2 procesa llamadas de sistema MNT_DETACH umount2 sin verificar que el indicador MNT_LOCKED no est\u00e1 establecido, lo que permite a usuarios locales eludir restricciones dedicadas al acceso y navegar a localizaciones de archivos de sistema bajo un montaje llamando a umount2 en un espacio de nombres de usuario."
}
],
"id": "CVE-2014-9717",
"lastModified": "2026-06-17T00:18:52.140",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 3.6,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 4.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N",
"version": "3.0"
},
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"impactScore": 4.2,
"source": "nvd@nist.gov",
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]
},
"published": "2016-05-02T10:59:06.593",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1"
},
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html"
},
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html"
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{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html"
},
{
"source": "cve@mitre.org",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2015/04/17/4"
},
{
"source": "cve@mitre.org",
"url": "http://www.securityfocus.com/bid/74226"
},
{
"source": "cve@mitre.org",
"url": "http://www.spinics.net/lists/linux-containers/msg30786.html"
},
{
"source": "cve@mitre.org",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1226751"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1"
},
{
"source": "cve@mitre.org",
"url": "https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2015/04/17/4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/74226"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.spinics.net/lists/linux-containers/msg30786.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1226751"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/torvalds/linux/commit/ce07d891a0891d3c0d0c2d73d577490486b809e1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://groups.google.com/forum/message/raw?msg=linux.kernel/HnegnbXk0Vs/RClojwJzAFEJ"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-284"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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