Scientific Linux: SLSA-2015:2694-1 Important Qemu-KVM Update for DoS

Date: Tue, 22 Dec 2015 18:01:24 +0000
Reply-To: scientific-linux-users@
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Subject: Security ERRATA Important: qemu-kvm on SL6.x i386/x86_64
MIME-Version: 1.0
Message-ID: <20151222180124.19001.55372@slpackages.fnal.gov>

Synopsis: Important: qemu-kvm security update
Advisory ID: SLSA-2015:2694-1
Issue Date: 2015-12-22
CVE Numbers: CVE-2015-7504
 CVE-2015-7512
--

A heap-based buffer overflow flaw was discovered in the way QEMU's AMD PC-
Net II Ethernet Controller emulation received certain packets in loopback
mode. A privileged user (with the CAP_SYS_RAWIO capability) inside a guest
could use this flaw to crash the host QEMU process (resulting in denial of
service) or, potentially, execute arbitrary code with privileges of the
host QEMU process. (CVE-2015-7504)

A buffer overflow flaw was found in the way QEMU's AMD PC-Net II emulation
validated certain received packets from a remote host in non-loopback
mode. A remote, unprivileged attacker could potentially use this flaw to
execute arbitrary code on the host with the privileges of the QEMU
process. Note that to exploit this flaw, the guest network interface must
have a large MTU limit. (CVE-2015-7512)

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.
--

SL6
 x86_64
 qemu-guest-agent-0.12.1.2-2.479.el6_7.3.x86_64.rpm
 qemu-img-0.12.1.2-2.479.el6_7.3.x86_64.rpm
 qemu-kvm-0.12.1.2-2.479.el6_7.3.x86_64.rpm
 qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.3.x86_64.rpm
 qemu-kvm-tools-0.12.1.2-2.479.el6_7.3.x86_64.rpm
 i386
 qemu-guest-agent-0.12.1.2-2.479.el6_7.3.i686.rpm
 qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.3.i686.rpm

- Scientific Linux Development Team
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