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SYNTHESIS OF THE VULNERABILITY

A local attacker, who is administrator in a guest system, can
modify the version of the tables that store permissions for shared
memory pages, in order to make the hypervisor halt.

Impacted products: XenServer, Debian, Fedora, SLES, Unix (platform)

Severity: 2/4

Creation date: 04/12/2012

DESCRIPTION OF THE VULNERABILITY

A local attacker, who is administrator in a guest system, can
modify the version of the tables that store permissions for shared
memory pages, in order to make the hypervisor halt.

Technical details are unknown.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Xen-Denial-of-service-via-the-grant-tables-12200