Red Hat Bugzilla – Full Text Bug Listing
|Summary:||CVE-2012-5511 CVE-2012-6333 kernel: xen: several HVM operations do not validate the range of their inputs|
|Product:||[Other] Security Response||Reporter:||Petr Matousek <pmatouse>|
|Component:||vulnerability||Assignee:||Red Hat Product Security <security-response-team>|
|Status:||CLOSED NOTABUG||QA Contact:|
|Version:||unspecified||CC:||drjones, imammedo, jlieskov, lersek, pbonzini, security-response-team, tburke|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2013-08-24 10:03:11 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Bug Depends On:||883084|
Description Petr Matousek 2012-11-16 06:07:55 EST
Several HVM control operations do not check the size of their inputs and can tie up a physical CPU for extended periods of time. In addition dirty video RAM tracking involves clearing the bitmap provided by the domain controlling the guest (e.g. dom0 or a stubdom). If the size of that bitmap is overly large, an intermediate variable on the hypervisor stack may overflow that stack. A malicious guest administrator can cause Xen to become unresponsive or to crash leading in either case to a Denial of Service. Acknowledgements: Red Hat would like to thank the Xen project for reporting this issue.
Comment 3 Petr Matousek 2012-11-16 06:28:09 EST
Statement: Not vulnerable. This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5. This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.
Comment 4 Petr Matousek 2012-12-03 13:10:11 EST
Created xen tracking bugs for this issue Affects: fedora-all [bug 883084]
Comment 5 Fedora Update System 2012-12-11 19:16:14 EST
xen-4.2.0-6.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2012-12-13 01:00:18 EST
xen-4.1.3-7.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Petr Matousek 2012-12-13 09:17:47 EST
*** Bug 886863 has been marked as a duplicate of this bug. ***
Comment 8 Fedora Update System 2012-12-15 12:55:47 EST
xen-4.1.3-6.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.