CVE ID:	CVE-2010-4247
Description:	The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2010-4247 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console http://www.securityfocus.com/archive/1/520102/100/0/threaded 35093 http://secunia.com/advisories/35093 42789 http://secunia.com/advisories/42789 45029 http://www.securityfocus.com/bid/45029 46397 http://secunia.com/advisories/46397 ADV-2011-0024 http://www.vupen.com/english/advisories/2011/0024 RHSA-2011:0004 http://www.redhat.com/support/errata/RHSA-2011-0004.html [oss-security] 20101123 CVE request: xen: request-processing loop is unbounded in blkback http://www.openwall.com/lists/oss-security/2010/11/23/1 [oss-security] 20101124 Re: CVE request: xen: request-processing loop is unbounded in blkback http://www.openwall.com/lists/oss-security/2010/11/24/8 http://www.vmware.com/security/advisories/VMSA-2011-0012.html http://www.vmware.com/security/advisories/VMSA-2011-0012.html http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/7070d34f251c http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/77f831cbb91d https://bugzilla.redhat.com/show_bug.cgi?id=656206 https://bugzilla.redhat.com/show_bug.cgi?id=656206