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Red Hat Enterprise Linux: RHSA-2019-2078-01 Low: QEMU-KVM Security Bug Fix

red hat
Calendar Grey August 6, 2019
Dist Redhat Esm H88
A new release for qemu-kvm in CentOS aims to fix minor security vulnerabilities and improve overall functionality.
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: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824)
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 7.7 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux low severity network threat information leakage qemu-kvm

References

https://access.redhat.com/security/cve/CVE-2019-9824 https://access.redhat.com/security/updates/classification#low https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/7/html/7.7_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: qemu-kvm-1.5.3-167.el7.src.rpm
x86_64: qemu-img-1.5.3-167.el7.x86_64.rpm qemu-kvm-1.5.3-167.el7.x86_64.rpm qemu-kvm-common-1.5.3-167.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-167.el7.x86_64.rpm qemu-kvm-tools-1.5.3-167.el7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source: qemu-kvm-1.5.3-167.el7.src.rpm
x86_64: qemu-img-1.5.3-167.el7.x86_64.rpm qemu-kvm-1.5.3-167.el7.x86_64.rpm qemu-kvm-common-1.5.3-167.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-167.el7.x86_64.rpm qemu-kvm-tools-1.5.3-167.el7.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: qemu-kvm-1.5.3-167.el7.src.rpm
x86_64: qemu-img-1.5.3-167.el7.x86_64.rpm qemu-kvm-1.5.3-167.el7.x86_64.rpm qemu-kvm-common-1.5.3-167.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-167.el7.x86_64.rpm qemu-kvm-tools-1.5.3-167.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: qemu-kvm-1.5.3-167.el7.src.rpm
x86_64: qemu-img-1.5.3-167.el7.x86_64.rpm qemu-kvm-1.5.3-167.el7.x86_64.rpm qemu-kvm-common-1.5.3-167.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-167.el7.x86_64.rpm qemu-kvm-tools-1.5.3-167.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
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2078-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2078
Issue date: 2019-08-06

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 Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory bug fix Red Hat Enterprise Linux low severity network threat information leakage 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

1654627 - Qemu: hw: bt: keep bt/* objects from building [rhel-7.7]

1658407 - mode="host-model" VMs include broken "arch-facilities" flag name [qemu-kvm]

1659229 - Ballooning is incompatible with vfio assigned devices, but not prevented

1678515 - CVE-2019-9824 QEMU: Slirp: information leakage in tcp_emu() due to uninitialized stack variables

1686253 - Bitmap merge: Segment fault when merge with a not existed src_name in transaction mode

1709495 - Change CPUID[0x40000000].EAX from 0 to KVM_CPUID_FE...ATURES (0x40000001)

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