CVE-2012-3495

Citrix XenServer <= 6.0.2 - Denial of Service via physdev_get_free_pirq Hypercall

Title source: llm
STIX 2.1

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.

References (16)

Core 16
Core References
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/55082
Various Sources mailing-list x_refsource_mlist
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/51413
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/55406
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1027480
Vendor Advisory x_refsource_confirm
http://support.citrix.com/article/CTX134708
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-201309-24.xml
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201604-03
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2012/09/05/6

Scores

EPSS 0.0008
EPSS Percentile 23.6%

Details

CWE
CWE-20
Status published
Products (9)
citrix/xenserver 5.0
citrix/xenserver 5.5
citrix/xenserver 5.6 (3 CPE variants)
citrix/xenserver 6.0
citrix/xenserver < 6.0.2
xen/xen 4.1.0
xen/xen 4.1.1
xen/xen 4.1.2
xen/xen 4.1.3
Published Nov 23, 2012
Tracked Since Feb 18, 2026