Red Hat Bugzilla – Bug 1012587
CVE-2013-4375 xen: qemu disk backend (qdisk) resource leak (XSA-71)
Last modified: 2015-10-15 16:58:45 EDT
The qdisk PV disk backend in the qemu-xen flavour of qemu ("upstream
qemu") can be influenced by a malicious frontend to leak mapped grant
A malicious HVM guest can cause the backend domain to run out of grant
references, leading to a DoS for any other domain which shares that
Red Hat would like to thank the Xen project for reporting this issue.
This issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5 as it does not provide support for the qdisk PV backend.
This issue does not affect the versions of qemu-kvm as shipped with Red Hat Enterprise Linux 6 as they did not include the upstream commit that introduced this flaw.
This issue does not affect Red Hat Enterprise MRG 2.
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1017843]
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1017844]
xen-4.2.3-4.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
xen-4.2.3-4.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.