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CVE-2012-3495

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…

Medium6.1EPSS 0.44%
Published
Updated
Reserved
Assigned by
redhat

Description

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.

Scores

CVSS scores of CVE-2012-3495, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0Medium6.1AV:L/AC:L/Au:N/C:P/I:P/A:C
EPSS (exploitation in 30 days)
0.44% · top 62% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.

Weakness

Affected products

  • n/a

    • affected n/a

References (16)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .