kmod, kvm security update

2017-03-08T18:33:47
ID CESA-2017:0454
Type centos
Reporter CentOS Project
Modified 2017-03-08T18:33:47

Description

CentOS Errata and Security Advisory CESA-2017:0454

KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware. Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc.

Security Fix(es):

  • Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615)

  • Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615.

Merged security bulletin from advisories: http://lists.centos.org/pipermail/centos-announce/2017-March/022325.html

Affected packages: kmod-kvm kmod-kvm-debug kvm kvm-qemu-img kvm-tools

Upstream details at: https://rhn.redhat.com/errata/RHSA-2017-0454.html