Security Advisory Moderate: qemu-kvm-rhev security update

Advisory: RHSA-2015:1739-1
Type: Security Advisory
Severity: Moderate
Issued on: 2015-09-07
Last updated on: 2015-09-07
Affected Products:
CVEs (cve.mitre.org): CVE-2015-5165

Details

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 Moderate 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. The qemu-kvm-rhev package provides the
user-space component for running virtual machines using KVM.

An information leak flaw was found in the way QEMU's RTL8139 emulation
implementation processed network packets under RTL8139 controller's C+ mode
of operation. An unprivileged guest user could use this flaw to read up to
65 KB of uninitialized QEMU heap memory. (CVE-2015-5165)

Red Hat would like to thank the Xen project for reporting this issue.
Upstream acknowledges Donghai Zhu of Alibaba as the original reporter.

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.


Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Updated packages

(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

1248382 - migration/rdma: 7.1->7.2: RDMA ERROR: ram blocks mismatch #3!
1248760 - CVE-2015-5165 Qemu: rtl8139 uninitialized heap memory information leakage to guest (XSA-140)


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/