CVE-2013-4361

Kernel: Xen: Xsa-66: information leak through fbld instruction emulation

Published Oct 1, 2013 CVSS 2.0 · 2.1 Low EPSS < 1% KEV · Not listed
Description
The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the 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-3006-1 xen security update
EUVD EUVD EUVD-2013-4245 The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the instruction.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 6, 2024, 4:38 PM
Reserved
Jun 12, 2013, 12:00 AM
Status
Modified
Published
Oct 1, 2013, 5:55 PM
Modified
Jun 16, 2026, 11:57 PM
Severity
Low
Public date
Sep 30, 2013, 12:00 AM