RedHat: RHSA-2018-2462:01 Important: qemu-kvm security and bug fix update
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 while reassembling fragmented datagrams
(CVE-2018-11806)
* QEMU: i386: multiboot OOB access while loading kernel image
(CVE-2018-7550)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
Red Hat would like to thank Jskz - Zero Day Initiative (trendmicro.com) for
reporting CVE-2018-11806 and Cyrille Chatras (Orange.com) and CERT-CC
(Orange.com) for reporting CVE-2018-7550.
Bug Fix(es):
* Previously, live migrating a Windows guest in some cases caused the guest
to become unresponsive. This update ensures that Real-time Clock (RTC)
interrupts are not missed, which prevents the problem from occurring.
(BZ#1596302)
Summary
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.
References
https://access.redhat.com/security/cve/CVE-2018-7550 https://access.redhat.com/security/cve/CVE-2018-11806 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux Client (v. 7):
Source:
qemu-kvm-1.5.3-156.el7_5.5.src.rpm
x86_64:
qemu-img-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-common-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-tools-1.5.3-156.el7_5.5.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
Source:
qemu-kvm-1.5.3-156.el7_5.5.src.rpm
x86_64:
qemu-img-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-common-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-tools-1.5.3-156.el7_5.5.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
qemu-kvm-1.5.3-156.el7_5.5.src.rpm
x86_64:
qemu-img-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-common-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-tools-1.5.3-156.el7_5.5.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
qemu-kvm-1.5.3-156.el7_5.5.src.rpm
x86_64:
qemu-img-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-common-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-debuginfo-1.5.3-156.el7_5.5.x86_64.rpm
qemu-kvm-tools-1.5.3-156.el7_5.5.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/
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.
Topic
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
1549798 - CVE-2018-7550 QEMU: i386: multiboot OOB access while loading kernel image
1586245 - CVE-2018-11806 QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams
