CVE-2015-7813 Information

Description

Xen 4.4.x 4.5.x and 4.6.x does not limit the number of printk console messages when reporting unimplemented hypercalls which allows local guests to cause a denial of service via a sequence of (1) HYPERVISOR_physdev_op hypercalls which are not properly handled in the do_physdev_op function in arch/arm/physdev.c or (2) HYPERVISOR_hvm_op hypercalls which are not properly handled in the do_hvm_op function in arch/arm/hvm.c.

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html http://www.debian.org/security/2015/dsa-3414 http://www.securitytracker.com/id/1034029 http://xenbits.xen.org/xsa/advisory-146.html https://security.gentoo.org/glsa/201604-03