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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://secunia.com/advisories/55082 ↗
- http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593 ↗
- http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html ↗
- http://secunia.com/advisories/51413 ↗
- http://security.gentoo.org/glsa/glsa-201309-24.xml ↗
- http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability ↗
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html ↗
- http://www.securityfocus.com/bid/55406 ↗
- http://www.securitytracker.com/id?1027480 ↗
- https://security.gentoo.org/glsa/201604-03 ↗
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html ↗
- http://support.citrix.com/article/CTX134708 ↗
- http://www.openwall.com/lists/oss-security/2012/09/05/6 ↗
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html ↗