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====================================================================                   
Red Hat Security Advisory

Synopsis:          Low: qemu-kvm security, bug fix, and enhancement update
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
CVE Names:         CVE-2019-9824
====================================================================
1. Summary:

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

2. 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

3. Description:

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.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

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)

6. 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/

7. References:

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

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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