CVE-2013-1917

kernel: xen: Xen PV DoS vulnerability with SYSENTER

Published May 13, 2013 CVSS 2.0 · 1.9 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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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.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 6, 2024, 3:20 PM
Reserved
Feb 19, 2013, 12:00 AM
Status
Modified
Published
May 13, 2013, 11:55 PM
Modified
Jun 16, 2026, 11:52 PM
Severity
Important
Public date
Apr 18, 2013, 12:00 AM