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Red Hat: RHSA-2018:2462 Important: qemu-kvm Heap Overflow

red hat
Calendar Grey August 16, 2018
Dist Redhat Esm H88
Oracle has unveiled a significant patch for VirtualBox targeting essential bug resolutions and security loopholes now ready for deployment.
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 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)

Topics%20covered

Topics Covered

security advisory Red Hat bug fix heap overflow important update qemu-kvm

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

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2018:2462-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:2462
Issue date: 2018-08-16

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 bug fix heap overflow important update 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

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

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