Issued:

2017-05-09

Updated:

2017-05-09

RHSA-2017:1209 - Important: rhev-hypervisor bug fix and enhancement update for RHEV 3.6.11

Synopsis

Important: rhev-hypervisor bug fix and enhancement update for RHEV 3.6.11

Type/Severity

Security Advisory Important

Topic

An update for rhev-hypervisor7 is now available for RHEV 3.X Hypervisor and Agents for RHEL-6 and RHEV 3.X Hypervisor and Agents for RHEL-7.

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 rhev-hypervisor package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.

Security Fix(es):

• A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system. (CVE-2017-6074)

Red Hat would like to thank Andrey Konovalov (Google) for reporting this issue.

Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions.

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

Affected Products

Updated Packages

• rhev-hypervisor7-7.3-20170425.0.el7ev.src.rpm
• rhev-hypervisor7-7.3-20170425.0.el6ev.src.rpm
• rhev-hypervisor7-7.3-20170425.0.el7ev.noarch.rpm
• rhev-hypervisor7-7.3-20170425.0.el6ev.noarch.rpm

Fixes

• This content is not included.BZ - 1423071
• This content is not included.BZ - 1434999

CVEs

• CVE-2017-6074

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.