Fedora: DSA-5140-3 Critical: QEMU Security Flaw and Service Disruption

Multiple security issues have been discovered in the Xen virtualisation
solution which may result in denial of service, information disclosure
or privilege escalation.

CVE-2014-8594

Roger Pau Monne and Jan Beulich discovered that incomplete
restrictions on MMU update hypercalls may result in privilege
escalation.

CVE-2014-8595

Jan Beulich discovered that missing privilege level checks in the
x86 emulation of far branches may result in privilege escalation.

CVE-2014-8866

Jan Beulich discovered that an error in compatibility mode hypercall
argument translation may result in denial of service.

CVE-2014-8867

Jan Beulich discovered that an insufficient restriction in
acceleration support for the "REP MOVS" instruction may result in
denial of service.

CVE-2014-9030

Andrew Cooper discovered a page reference leak in MMU_MACHPHYS_UPDATE
handling, resulting in denial of service.

For the stable distribution (wheezy), these problems have been fixed in
version 4.1.4-3+...