Xen AMD CPU erratum 793 denial of service
|xen-cve20136885-dos (89335)||Low Risk|
Xen is vulnerable to a denial of service when running on AMD 16h 00h-0Fh processors, caused by an error when handling interactions between locked instructions and write-combined memory types. A local attacker on an HVM guest could exploit this vulnerability to cause the host operating system to become unresponsive.
Denial of Service
Apply the patch for this vulnerability (xsa82.patch), available from the XenSource Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- Red Hat Bugzilla ¿ Bug 1035823: (CVE-2013-6885) CVE-2013-6885 hw: AMD CPU erratum may cause core hang.
- XenSource Web site: Xen.
- XSA-82: (CVE-2013-6885) - Guest triggerable AMD CPU erratum may cause host hang.
- XSA-82: Xen Security Advisory 82 (CVE-2013-6885) - Guest triggerable AMD CPU erratum may cause host hang.
- BID-63983: AMD 16h Model Processor CVE-2013-6885 Local Denial of Service Vulnerability
- CVE-2013-6885: 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.
- RHSA-2014-0285: Important: kernel security, bug fix, and enhancement update
- SA55840: Xen AMD CPU Core Denial of Service Vulnerability
- SA56407: Citrix XenServer Two Denial of Service Vulnerabilities
- Citrix XenServer 5.6
- Citrix XenServer 6.0
- Citrix XenServer 6.1
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client
- XenSource Xen 3.3.0
- XenSource Xen 4.1
- XenSource Xen 4.1.2
- XenSource Xen 4.2
- XenSource Xen 4.3.0
Dec 01, 2013
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.