Important CentOS kvm Security Update


kmod-kvm-83-272.el5.centos.x86_64.rpm, kmod-kvm-debug-83-272.el5.centos.x86_64.rpm, kvm-83-272.el5.centos.src.rpm, kvm-83-272.el5.centos.x86_64.rpm, kvm-qemu-img-83-272.el5.centos.x86_64.rpm, kvm-tools-83-272.el5.centos.x86_64.rpm
2017-07-27 19:09
Important CentOS xen 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 kvm 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.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems.

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 kvm users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. Note: The procedure in
the Solution section must be performed before this update will take effect.
Please see

Am I vulnerable?

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 kmod-kvm kmod-kvm-83-272.el5.centos.x86_64.rpm
kmod-kvm-debug kmod-kvm-debug-83-272.el5.centos.x86_64.rpm
kvm kvm-83-272.el5.centos.src.rpm
kvm kvm-83-272.el5.centos.x86_64.rpm
kvm-qemu-img kvm-qemu-img-83-272.el5.centos.x86_64.rpm
kvm-tools kvm-tools-83-272.el5.centos.x86_64.rpm