Xen set_p2m_entry() denial of service
|xen-setp2mentry-dos (80024)||Medium Risk|
Xen is vulnerable to a denial of service, caused by the failure of the set_p2m_entry() call. A local attacker on a guest operating system could exploit this vulnerability to exhaust memory resources and cause the host operating system to crash.
Denial of Service
Refer to Xen Security Advisory 22 (CVE-2012-4537) for patch, upgrade or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- CTX135458: Citrix XenServer Multiple Security Updates .
- Xen Security Advisory 22 (CVE-2012-4537): Memory mapping failure DoS vulnerability.
- BID-56498: Xen Multiple Denial of Service Vulnerabilities
- CVE-2012-4537: Xen 3.4 through 4.2, and possibly earlier versions, does not properly synchronize the p2m and m2p tables when the set_p2m_entry function fails, which allows local HVM guest OS administrators to cause a denial of service (memory consumption and assertion failure), aka Memory mapping failure DoS vulnerability.
- DSA-2582: xen -- several vulnerabilities
- OSVDB ID: 87307: Xen set_p2m_entry() Failed Call Handling p2m Table Memory Exhaustion Local DoS
- RHSA-2012-1540: Important: kernel security, bug fix, and enhancement update
- SA51200: Xen Multiple Denial of Service Vulnerabilities
- SA51214: Citrix XenServer Multiple Denial of Service Vulnerabilities
- Citrix XenServer 5.0
- Citrix XenServer 5.5
- Citrix XenServer 5.6
- Citrix XenServer 6.0
- Citrix XenServer 6.1
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5
- XenSource Xen 3.0
- XenSource Xen 4.1
- XenSource Xen 4.1.1
- XenSource Xen 4.1.2
Nov 13, 2012
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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.