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CVE-2018-7858

Status Candidate

Overview

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.

Related Files

Red Hat Security Advisory 2018-2162-01
Posted Jul 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2162-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Issues addressed include a bypass vulnerability.

tags | advisory, kernel, bypass
systems | linux, redhat
advisories | CVE-2017-13672, CVE-2018-3639, CVE-2018-5683, CVE-2018-7858
MD5 | 07c82da0e66fff158b7df439f93cc21c
Ubuntu Security Notice USN-3649-1
Posted May 16, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3649-1 - Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. Cyrille Chatras discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-16845, CVE-2018-7550, CVE-2018-7858
MD5 | 328c7fe35bf9b4dcb186ccdd37961b7e
Red Hat Security Advisory 2018-1416-01
Posted May 15, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1416-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Issues addressed include an out of bounds access vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2018-7858
MD5 | 2ed1e99b749114d3666c1b9ad94f23a1
Red Hat Security Advisory 2018-1369-01
Posted May 10, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1369-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Issues addressed include out-of-bounds access.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-7550, CVE-2018-7858
MD5 | 436f58ce6c3130ea7f966c619aebe7f6
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