Public Date:
1035823: CVE-2013-6885 hw: AMD CPU erratum may cause core hang

The MITRE CVE dictionary describes this issue as:

The microcode on AMD 16h 00h through 0Fh processors does not properly handle the interaction between locked instructions and write-combined memory types, which allows local users to cause a denial of service (system hang) via a crafted application, aka the errata 793 issue.

Find out more about CVE-2013-6885 from the MITRE CVE dictionary dictionary and NIST NVD.


This hardware issue is affecting certain AMD processors. Please consult your hardware vendor for any potential firmware updates providing a workaround for this issue.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4.3
Base Metrics AV:A/AC:H/Au:S/C:N/I:N/A:C
Access Vector Adjacent Network
Access Complexity High
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 5 (kernel) RHSA-2014:0285 2014-03-12

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel-xen Affected


Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Jan Beulich as the original reporter.

External References