Important CentOS xen Security Update


xen-3.0.3-146.el5_11.i386.rpm, xen-3.0.3-146.el5_11.i686.rpm, xen-3.0.3-146.el5_11.src.rpm, xen-3.0.3-146.el5_11.x86_64.rpm, xen-devel-3.0.3-146.el5_11.i386.rpm, xen-devel-3.0.3-146.el5_11.i686.rpm, xen-devel-3.0.3-146.el5_11.x86_64.rpm, xen-libs-3.0.3-146.el5_11.i386.rpm, xen-libs-3.0.3-146.el5_11.i686.rpm, xen-libs-3.0.3-146.el5_11.x86_64.rpm
2017-07-27 19:09
Important CentOS kvm Security Update
CVE-2015-3456 qemu-kvm
CVE-2015-3456 virtualbox
CVE-2015-3456 xen
CVE-2015-3456 qemu
2017-04-01 19:09
2017-01-05 20:13


Updated xen packages that fix one security issue are now available for Red
Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

The xen packages contain administration tools and the xend service for
managing the kernel-xen kernel for virtualization on Red Hat Enterprise

An out-of-bounds memory access flaw was found in the way QEMU's virtual
Floppy Disk Controller (FDC) handled FIFO buffer access while processing
certain FDC commands. A privileged guest user could use this flaw to crash
the guest or, potentially, execute arbitrary code on the host with the
privileges of the host's QEMU process corresponding to the guest.

Red Hat would like to thank Jason Geffner of CrowdStrike for reporting
this issue.

All xen users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing the
updated packages, all running fully-virtualized guests must be restarted
for this update to take effect.
Please see

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The constraints below list the versions that this vulnerability is patched in, and versions that are unaffected. If a patch is ready but unrealeased, then it is pending.

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Affected package information

Release Package Patched in
5 xen xen-3.0.3-146.el5_11.i386.rpm
xen xen-3.0.3-146.el5_11.i686.rpm
xen xen-3.0.3-146.el5_11.src.rpm
xen xen-3.0.3-146.el5_11.x86_64.rpm
xen-devel xen-devel-3.0.3-146.el5_11.i386.rpm
xen-devel xen-devel-3.0.3-146.el5_11.i686.rpm
xen-devel xen-devel-3.0.3-146.el5_11.x86_64.rpm
xen-libs xen-libs-3.0.3-146.el5_11.i386.rpm
xen-libs xen-libs-3.0.3-146.el5_11.i686.rpm
xen-libs xen-libs-3.0.3-146.el5_11.x86_64.rpm