Moderate CentOS qemu-kvm Security Update

Metadata

medium
4.9
libcacard-1.5.3-105.el7_2.7.i686.rpm, libcacard-1.5.3-105.el7_2.7.x86_64.rpm, libcacard-devel-1.5.3-105.el7_2.7.i686.rpm, libcacard-devel-1.5.3-105.el7_2.7.x86_64.rpm, libcacard-tools-1.5.3-105.el7_2.7.x86_64.rpm, qemu-img-1.5.3-105.el7_2.7.x86_64.rpm, qemu-kvm-1.5.3-105.el7_2.7.src.rpm, qemu-kvm-1.5.3-105.el7_2.7.x86_64.rpm, qemu-kvm-common-1.5.3-105.el7_2.7.x86_64.rpm, qemu-kvm-tools-1.5.3-105.el7_2.7.x86_64.rpm
CVE-2016-5126, CVE-2016-5403
rhn.redhat.com, lists.centos.org
2016-08-12
2017-07-27 19:11
v3.6/main/xen-4.7.0-r0
v3.4/main/xen-4.6.3-r1
v3.5/main/xen-4.7.0-r0
Important CentOS kvm Security Update
Moderate CentOS qemu-kvm Security Update
CVE-2016-5126 qemu-kvm
CVE-2016-5403 qemu
CVE-2016-5126 qemu
CVE-2016-5126 xen
CVE-2016-5403 qemu-kvm
CVE-2016-5403 xen
CVE-2016-5403
CVE-2016-5126
2017-04-14 09:03
2017-04-01 19:10
2017-01-05 20:14

Description


An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) 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 packages provide the user-space component for running virtual machines using KVM.

Security Fix(es):

* Quick Emulator(Qemu) built with the Block driver for iSCSI images support (virtio-blk) is vulnerable to a heap buffer overflow issue. It could occur while processing iSCSI asynchronous I/O ioctl(2) calls. A user inside guest could use this flaw to crash the Qemu process resulting in DoS or potentially leverage it to execute arbitrary code with privileges of the Qemu process on the host. (CVE-2016-5126)

* Quick emulator(Qemu) built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement and therefore causes unbounded memory allocation on the host controlled by the guest. (CVE-2016-5403)

Red Hat would like to thank hongzhenhao (Marvel Team) for reporting CVE-2016-5403.
Please see https://www.redhat.com/footer/terms-of-use.html

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
7 libcacard libcacard-1.5.3-105.el7_2.7.i686.rpm
libcacard libcacard-1.5.3-105.el7_2.7.x86_64.rpm
libcacard-devel libcacard-devel-1.5.3-105.el7_2.7.i686.rpm
libcacard-devel libcacard-devel-1.5.3-105.el7_2.7.x86_64.rpm
libcacard-tools libcacard-tools-1.5.3-105.el7_2.7.x86_64.rpm
qemu-img qemu-img-1.5.3-105.el7_2.7.x86_64.rpm
qemu-kvm qemu-kvm-1.5.3-105.el7_2.7.src.rpm
qemu-kvm qemu-kvm-1.5.3-105.el7_2.7.x86_64.rpm
qemu-kvm-common qemu-kvm-common-1.5.3-105.el7_2.7.x86_64.rpm
qemu-kvm-tools qemu-kvm-tools-1.5.3-105.el7_2.7.x86_64.rpm