FKIE_CVE-2015-2756
Vulnerability from fkie_nvd - Published: 2015-04-01 14:59 - Updated: 2026-06-17 00:24
Severity
Summary
QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| debian | debian_linux | 7.0 | |
| debian | debian_linux | 8.0 | |
| xen | xen | 4.3.0 | |
| xen | xen | 4.3.1 | |
| xen | xen | 4.3.2 | |
| xen | xen | 4.4.0 | |
| xen | xen | 4.4.1 | |
| xen | xen | 4.5.0 | |
| fedoraproject | fedora | 20 | |
| fedoraproject | fedora | 21 | |
| canonical | ubuntu_linux | 12.04 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 14.10 | |
| canonical | ubuntu_linux | 15.04 |
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"vendor": "n/a",
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],
"source": "cve@mitre.org"
}
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"cveTags": [],
"descriptions": [
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},
{
"lang": "es",
"value": "QEMU, utilizado en Xen 3.3.x hasta 4.5.x, no restringe correctamente el acceso a los registros de comandos PCI, lo que podr\u00eda permitir a usuarios locales invitados de HVM causar una denegaci\u00f3n de servicio (non-maskable interrupt (NMI) y ca\u00edda de anfitri\u00f3n) mediante la deshabilitaci\u00f3n de (1) la memoria o (2) la decodificaci\u00f3n I/O para un dispositivo PCI Express y posteriormente accediendo al dispositivo, lo que provoca una respuesta Unsupported Request (UR)."
}
],
"id": "CVE-2015-2756",
"lastModified": "2026-06-17T00:24:41.803",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2015-04-01T14:59:08.757",
"references": [
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html"
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html"
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"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html"
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"url": "http://lists.nongnu.org/archive/html/qemu-devel/2015-03/msg06179.html"
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"url": "http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html"
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{
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"url": "http://support.citrix.com/article/CTX201145"
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"url": "http://www.debian.org/security/2015/dsa-3259"
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"value": "CWE-264"
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"source": "nvd@nist.gov",
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]
}
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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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