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RedHat Enterprise Linux 7: RHSA-2020-1116-01 Critical Update for qemu-kvm

red hat
Calendar Grey March 31, 2020
Dist Redhat Esm H88
A security bulletin for Red Hat Enterprise Linux's qemu-kvm addresses significant vulnerabilities and introduces vital improvements.
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: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat Enterprise Linux security impact qemu-kvm Important tcp emulation buffer access

References

https://access.redhat.com/security/cve/CVE-2020-7039 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: qemu-kvm-1.5.3-173.el7.src.rpm
x86_64: qemu-img-1.5.3-173.el7.x86_64.rpm qemu-kvm-1.5.3-173.el7.x86_64.rpm qemu-kvm-common-1.5.3-173.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-173.el7.x86_64.rpm qemu-kvm-tools-1.5.3-173.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: qemu-kvm-1.5.3-173.el7.src.rpm
x86_64: qemu-img-1.5.3-173.el7.x86_64.rpm qemu-kvm-1.5.3-173.el7.x86_64.rpm qemu-kvm-common-1.5.3-173.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-173.el7.x86_64.rpm qemu-kvm-tools-1.5.3-173.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: qemu-kvm-1.5.3-173.el7.src.rpm
x86_64: qemu-img-1.5.3-173.el7.x86_64.rpm qemu-kvm-1.5.3-173.el7.x86_64.rpm qemu-kvm-common-1.5.3-173.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-173.el7.x86_64.rpm qemu-kvm-tools-1.5.3-173.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: qemu-kvm-1.5.3-173.el7.src.rpm
x86_64: qemu-img-1.5.3-173.el7.x86_64.rpm qemu-kvm-1.5.3-173.el7.x86_64.rpm qemu-kvm-common-1.5.3-173.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-173.el7.x86_64.rpm qemu-kvm-tools-1.5.3-173.el7.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:1116-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1116
Issue date: 2020-03-31

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 Red Hat Enterprise Linux security impact qemu-kvm Important tcp emulation buffer access

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

1270166 - UDP packet checksum is not converted from 0x0000 to 0xffff with Qemu e1000 emulation.

1626871 - [RFE] request for using TscInvariant feature with qemu-kvm.

1760607 - Corrupted EAX values due to missing brackets at CPUID[0x800000008] code

1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()

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