CVE-2015-2756 (GCVE-0-2015-2756)
Vulnerability from cvelistv5 – Published: 2015-04-01 14:00 – Updated: 2024-08-06 05:24
VLAI
EPSS
VEX
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.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
13 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/72577 | vdb-entryx_refsource_BID |
| https://security.gentoo.org/glsa/201504-04 | vendor-advisoryx_refsource_GENTOO |
| https://support.citrix.com/article/CTX206006 | x_refsource_CONFIRM |
| http://www.debian.org/security/2015/dsa-3259 | vendor-advisoryx_refsource_DEBIAN |
| http://lists.fedoraproject.org/pipermail/package-… | vendor-advisoryx_refsource_FEDORA |
| http://lists.fedoraproject.org/pipermail/package-… | vendor-advisoryx_refsource_FEDORA |
| http://support.citrix.com/article/CTX201145 | x_refsource_CONFIRM |
| http://lists.nongnu.org/archive/html/qemu-devel/2… | mailing-listx_refsource_MLIST |
| http://xenbits.xen.org/xsa/advisory-126.html | x_refsource_CONFIRM |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://www.ubuntu.com/usn/USN-2608-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.securitytracker.com/id/1031998 | vdb-entryx_refsource_SECTRACK |
| http://lists.fedoraproject.org/pipermail/package-… | vendor-advisoryx_refsource_FEDORA |
Date Public
2015-03-31 00:00
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"redhat_vex": {
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"current_release_date": "2025-11-21T12:20:16+00:00",
"cve": "CVE-2015-2756",
"id": "CVE-2015-2756",
"initial_release_date": "2015-03-31T00:00:00+00:00",
"product_status:known_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "xen: unmediated PCI command register access in qemu (xsa126)",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-2756.json",
"version": "3"
}
}
}
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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.
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.
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