CVE-2015-4163 Information

Description

GNTTABOP_swap_grant_ref in Xen 4.2 through 4.5 does not check the grant table operation version which allows local guest domains to cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version.

Reference

http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html http://support.citrix.com/article/CTX201145 http://www.debian.org/security/2015/dsa-3286 http://www.securityfocus.com/bid/75141 http://www.securitytracker.com/id/1032568 http://xenbits.xen.org/xsa/advisory-134.html https://security.gentoo.org/glsa/201604-03 https://support.citrix.com/article/CTX206006