Description
Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.
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://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html ↗
- http://secunia.com/advisories/55082 ↗
- http://www.securitytracker.com/id/1028455 ↗
- http://security.gentoo.org/glsa/glsa-201309-24.xml ↗
- http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html ↗
- http://www.openwall.com/lists/oss-security/2013/04/18/8 ↗
- http://www.debian.org/security/2012/dsa-2662 ↗
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html ↗
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html ↗