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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-2662-1 xen security update
EUVD EUVD EUVD-2013-1911 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T15:20:37.316Z

Reserved: 2013-02-19T00:00:00

Link: CVE-2013-1917

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2013-05-13T23:55:01.757

Modified: 2025-04-11T00:51:21.963

Link: CVE-2013-1917

cve-icon Redhat

Severity : Important

Publid Date: 2013-04-18T00:00:00Z

Links: CVE-2013-1917 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses