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Red Hat Enterprise Linux 7 RHSA-2019-1883 Important: QEMU-KVM Heap Overflow

red hat
Calendar Grey July 29, 2019
Dist Redhat Esm H88
Significant update from Red Hat regarding qemu-kvm security highlights crucial heap overflow correction. Verify security enhancements are applied.
An update for qemu-kvm is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Summary

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):
* QEMU: slirp: heap buffer overflow in tcp_emu() (CVE-2019-6778)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux important heap overflow qemu-kvm

References

https://access.redhat.com/security/cve/CVE-2019-6778 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: qemu-kvm-1.5.3-160.el7_6.3.src.rpm
x86_64: qemu-img-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.3.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: qemu-kvm-1.5.3-160.el7_6.3.src.rpm
x86_64: qemu-img-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: qemu-kvm-1.5.3-160.el7_6.3.src.rpm
x86_64: qemu-img-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: qemu-kvm-1.5.3-160.el7_6.3.src.rpm
x86_64: qemu-img-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-common-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-debuginfo-1.5.3-160.el7_6.3.x86_64.rpm qemu-kvm-tools-1.5.3-160.el7_6.3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:1883-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:1883
Issue date: 2019-07-29

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux important heap overflow qemu-kvm

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Bugs Fixed

1664205 - CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_emu()

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