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Red Hat Product Errata RHSA-2019:2924 - Security Advisory
Issued:
2019-09-27
Updated:
2019-09-27

RHSA-2019:2924 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: redhat-virtualization-host security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for redhat-release-virtualization-host and redhat-virtualization-host is now available for Red Hat Virtualization 4.2 for Red Hat Enterprise Linux 7.6 EUS.

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

The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks.

The following packages have been upgraded to a later upstream version: redhat-release-virtualization-host (4.2), redhat-virtualization-host (4.2). (BZ#1751435)

Security Fix(es):

  • A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/2974891

Affected Products

  • Red Hat Virtualization - Extended Update Support 4.2 for RHEL 7.6 x86_64
  • Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL 7.6 x86_64

Fixes

  • BZ - 1750351 - Rebase RHV-H 4.2 EUS on RHEL-7.6.EUS #7
  • BZ - 1750727 - CVE-2019-14835 kernel: vhost-net: guest to host kernel escape during migration

CVEs

  • CVE-2019-14835

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/security/vulnerabilities/kernel-vhost
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Virtualization - Extended Update Support 4.2 for RHEL 7.6

SRPM
redhat-release-virtualization-host-4.2-14.1.el7.src.rpm SHA-256: d62dccdb39081bf752ff1991e748d8e5a5694834980183274f3a9468864d00d9
x86_64
redhat-release-virtualization-host-4.2-14.1.el7.x86_64.rpm SHA-256: e74b6e47b8c6fab441a5e0b44367dc6f8c5f124084c0269b1c7191d4c777ee35
redhat-virtualization-host-image-update-placeholder-4.2-14.1.el7.noarch.rpm SHA-256: b6dfba1dd17e7793c1fff4cae9f8737f17278875aa7d7bced6351ecda50bb235

Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL 7.6

SRPM
redhat-release-virtualization-host-4.2-14.1.el7.src.rpm SHA-256: d62dccdb39081bf752ff1991e748d8e5a5694834980183274f3a9468864d00d9
redhat-virtualization-host-4.2-20190919.0.el7_6.src.rpm SHA-256: 663bf266d84ac85ff47c794d420dcebf6b0649d93f1d99e95a623fbd53f292f9
x86_64
redhat-release-virtualization-host-4.2-14.1.el7.x86_64.rpm SHA-256: e74b6e47b8c6fab441a5e0b44367dc6f8c5f124084c0269b1c7191d4c777ee35
redhat-release-virtualization-host-content-4.2-14.1.el7.x86_64.rpm SHA-256: 420f0434a57fcddd055436f74c19461888a1b3af2890dd457f5af6bd0dcd24c9
redhat-virtualization-host-image-update-4.2-20190919.0.el7_6.noarch.rpm SHA-256: 3ec682ce9d8d349ceeba2e4e53f17ed6cb603f1799b94426752317dd90b4673e
redhat-virtualization-host-image-update-placeholder-4.2-14.1.el7.noarch.rpm SHA-256: b6dfba1dd17e7793c1fff4cae9f8737f17278875aa7d7bced6351ecda50bb235

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

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