CVE-2012-3495

mediumpriority · track · 24EPSS 0.004 · 38 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.44% (38th) EPSS

CVSS 6.1 · medium

Is it mine?

10 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.1mediumAV:L/AC:L/Au:N/C:P/I:P/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 8.5

v2.05.2mediumAV:L/AC:L/Au:N/C:P/I:P/A:C/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (10)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
citrix xenserver≤ 6.0.2nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 5.0nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 5.5nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 5.6nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
citrix xenserver= 6.0nvdUScpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
xen xen= 4.1.0nvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
xen xen= 4.1.1nvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
xen xen= 4.1.2nvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
xen xen= 4.1.3nvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2012-11-23modified 2026-06-16

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+25193 more

references (43)

External citations — patches, advisories, analysis.

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