Issued:
2017-09-05
Updated:
2017-09-05

RHSA-2017:2628 - Moderate: qemu-kvm-rhev security and bug fix update

Synopsis

Moderate: qemu-kvm-rhev security and bug fix update

Type/Severity

Security Advisory Moderate

Topic

An update for qemu-kvm-rhev is now available for RHEV 3.X Hypervisor and Agents for RHEL-7 and RHEV 4.X RHEV-H and Agents for RHEL-7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es):

  • An assertion-failure flaw was found in the Network Block Device (NBD) server's initial connection negotiation, where the I/O co-routine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service. (CVE-2017-7539)

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.

Affected Products

ProductVersionArch
Red Hat Virtualization4x86_64
Red Hat Virtualization3x86_64
Red Hat Virtualization for IBM Power LE4ppc64le
Red Hat Virtualization for IBM Power LE3ppc64le

Updated Packages

  • qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.ppc64le.rpm
  • qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.x86_64.rpm
  • qemu-kvm-rhev-debuginfo-2.9.0-16.el7_4.5.x86_64.rpm
  • qemu-img-rhev-2.9.0-16.el7_4.5.ppc64le.rpm
  • qemu-kvm-rhev-2.9.0-16.el7_4.5.src.rpm
  • qemu-kvm-rhev-2.9.0-16.el7_4.5.x86_64.rpm
  • qemu-kvm-common-rhev-2.9.0-16.el7_4.5.ppc64le.rpm
  • qemu-img-rhev-2.9.0-16.el7_4.5.x86_64.rpm
  • qemu-kvm-tools-rhev-2.9.0-16.el7_4.5.ppc64le.rpm
  • qemu-kvm-common-rhev-2.9.0-16.el7_4.5.x86_64.rpm
  • qemu-kvm-rhev-2.9.0-16.el7_4.5.ppc64le.rpm

Fixes

CVEs

References

Additional information