SciLinux: Important: qemu-kvm on SL7.x x86_64

    Date13 Jun 2017
    204
    Posted ByLinuxSecurity Advisories
    Previously, guest virtual machines in some cases became unresponsivewhen the "pty" back end of a serial device performed an irregular I/Ocommunication. This update improves the handling of serial I/O on guests,which prevents the described problem from occurring.
    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
    --
    
    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
    
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