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CentOS Update for qemu-img CESA-2018:2001 centos7

Information

Severity

Severity

Medium

Family

Family

CentOS Local Security Checks

CVSSv2 Base

CVSSv2 Base

4.9

CVSSv2 Vector

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

3 years ago

Summary

Check the version of qemu-img

Insight

Insight

Kernel-based Virtual Machine (KVM) 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. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load &amp Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639) Note: This is the qemu-kvm side of the CVE-2018-3639 mitigation that includes support for guests running on hosts with AMD processors. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.

Affected Software

Affected Software

qemu-img on CentOS 7

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Please install the updated packages.

Common Vulnerabilities and Exposures (CVE)