Important: qemu-kvm-rhev security update
|Last updated on:||2015-05-13|
Updated qemu-kvm-rhev packages that fix one security issue are now
available for Red Hat Enterprise Virtualization Hypervisor 7.
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
KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the
user-space component for running virtual machines using KVM.
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
All qemu-kvm-rhev users are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. After installing
this update, shut down all running virtual machines. Once all virtual
machines have shut down, start them again for this update to take effect.
relevant to your system have been applied.
For details on how to apply this update, refer to:
|(The unlinked packages above are only available from the Red Hat Network)|
Bugs fixed (see bugzilla for more information)
1218611 - CVE-2015-3456 qemu: fdc: out-of-bounds fifo buffer memory access
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from: