Red Hat Bugzilla – Full Text Bug Listing
|Summary:||CVE-2012-5634 kernel: xen: VT-d interrupt remapping source validation flaw|
|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, lersek, pbonzini, security-response-team|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2013-08-24 09:50:09 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
|Bug Depends On:||893568|
Description Petr Matousek 2012-12-13 11:52:02 EST
When passing a device which is behind a legacy PCI Bridge through to a guest Xen incorrectly configures the VT-d hardware. This could allow incorrect interrupts to be injected to other guests which also have passthrough devices. In a typical Xen system many devices are owned by domain 0 or driver domains, leaving them vulnerable to such an attack. Such a DoS is likely to have an impact on other guests running in the system. On systems using Intel VT-d for PCI passthrough a malicious domain, given access to a device which is behind a legacy PCI bridge, can mount a denial of service attack affecting the whole system. Acknowledgements: Red Hat would like to thank the Xen project for reporting this issue.
Comment 3 Petr Matousek 2012-12-13 11:57:01 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 2013-01-09 08:25:04 EST
Created xen tracking bugs for this issue Affects: fedora-all [bug 893568]
Comment 5 Fedora Update System 2013-01-22 20:28:48 EST
xen-4.1.4-2.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2013-01-22 21:05:31 EST
xen-4.2.1-3.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2013-02-01 23:28:40 EST
xen-4.1.4-3.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.