Synopsis:          Important: qemu-kvm security and bug fix update
Advisory ID:       SLSA-2017:1430-1
Issue Date:        2017-06-13
CVE Numbers:       CVE-2017-7718
                   CVE-2017-7980
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Security Fix(es):

* An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx
VGA Emulator support. The vulnerability could occur while copying VGA data
via various bitblt functions. A privileged user inside a guest could use
this flaw to crash the QEMU process or, potentially, execute arbitrary
code on the host with privileges of the QEMU process. (CVE-2017-7980)

* An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA
Emulator support. The vulnerability could occur while copying VGA data
using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A
privileged user inside a guest could use this flaw to crash the QEMU
process, resulting in denial of service. (CVE-2017-7718)

Bug Fix(es):

* Previously, guest virtual machines in some cases became unresponsive
when the "pty" back end of a serial device performed an irregular I/O
communication. This update improves the handling of serial I/O on guests,
which prevents the described problem from occurring.
--

SL7
  x86_64
    qemu-img-1.5.3-126.el7_3.9.x86_64.rpm
    qemu-kvm-1.5.3-126.el7_3.9.x86_64.rpm
    qemu-kvm-common-1.5.3-126.el7_3.9.x86_64.rpm
    qemu-kvm-debuginfo-1.5.3-126.el7_3.9.x86_64.rpm
    qemu-kvm-tools-1.5.3-126.el7_3.9.x86_64.rpm

- Scientific Linux Development Team