FKIE_CVE-2012-3495
Vulnerability from fkie_nvd - Published: 2012-11-23 20:55 - Updated: 2026-06-16 23:43
Severity
Summary
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
References
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
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"matchCriteriaId": "24FCA867-7158-459C-9D6C-75A39263F00A",
"versionEndIncluding": "6.0.2",
"vulnerable": true
},
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"vulnerable": true
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors."
},
{
"lang": "es",
"value": "La hypercall physdev_get_free_pirq en arch/x86/physdev.c en Xen v4.1.x y Citrix XenServer v6.0.2 y anteriores utiliza el valor devuelto por la funci\u00f3n get_free_pirq como un \u00edndice de la matriz sin comprobar que el valor de retorno indica un error, permitiendo a los hu\u00e9spedes del OS invitado causar una denegaci\u00f3n de servicio (escritura de memoria no v\u00e1lidas y ca\u00edda del host) y, posiblemente, obtener privilegios a trav\u00e9s de vectores no especificados."
}
],
"id": "CVE-2012-3495",
"lastModified": "2026-06-16T23:43:20.333",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.1,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 8.5,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2012-11-23T20:55:03.150",
"references": [
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/51413"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/55082"
},
{
"source": "secalert@redhat.com",
"url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
},
{
"source": "secalert@redhat.com",
"url": "http://support.citrix.com/article/CTX134708"
},
{
"source": "secalert@redhat.com",
"url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability"
},
{
"source": "secalert@redhat.com",
"url": "http://www.openwall.com/lists/oss-security/2012/09/05/6"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securityfocus.com/bid/55406"
},
{
"source": "secalert@redhat.com",
"url": "http://www.securitytracker.com/id?1027480"
},
{
"source": "secalert@redhat.com",
"url": "http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593"
},
{
"source": "secalert@redhat.com",
"url": "https://security.gentoo.org/glsa/201604-03"
},
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"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html"
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/51413"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/55082"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://security.gentoo.org/glsa/glsa-201309-24.xml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://support.citrix.com/article/CTX134708"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability"
},
{
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"url": "http://www.openwall.com/lists/oss-security/2012/09/05/6"
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"url": "http://www.securityfocus.com/bid/55406"
},
{
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"url": "http://www.securitytracker.com/id?1027480"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593"
},
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"url": "https://security.gentoo.org/glsa/201604-03"
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],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"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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