Synopsis: Important: qemu-kvm security update Advisory ID: SLSA-2017:1206-1 Issue Date: 2017-05-09 CVE Numbers: CVE-2016-9603 CVE-2017-2633 CVE-2017-7718 CVE-2017-7980 -- Security Fix(es): * A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process 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-2016-9603) * 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 memory access issue was found in QEMU's VNC display driver support. The vulnerability could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user/process inside a guest could use this flaw to crash the QEMU process, resulting in a denial of service. (CVE-2017-2633) * 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) -- SL6 x86_64 qemu-guest-agent-0.12.1.2-2.503.el6_9.3.x86_64.rpm qemu-img-0.12.1.2-2.503.el6_9.3.x86_64.rpm qemu-kvm-0.12.1.2-2.503.el6_9.3.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.503.el6_9.3.x86_64.rpm i386 qemu-guest-agent-0.12.1.2-2.503.el6_9.3.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.503.el6_9.3.i686.rpm - Scientific Linux Development Team