RHEL 6 : qemu-kvm (RHSA-2016:1585)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for qemu-kvm is now available for Red Hat Enterprise Linux
6.

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 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
this issue.

See also :

https://www.redhat.com/security/data/cve/CVE-2016-5403.html
http://rhn.redhat.com/errata/RHSA-2016-1585.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.7
(CVSS2#E:F/RL:ND/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 92837 ()

Bugtraq ID:

CVE ID: CVE-2016-5403

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