Issued:

2016-12-20

Updated:

2016-12-20

RHSA-2016:2962 - Important: kernel security and bug fix update

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 5.

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 kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• A use-after-free vulnerability was found in the kernels socket recvmmsg subsystem. This may allows remote attackers to corrupt memory and may allow execution of arbitrary code. This corruption takes place during the error handling routines within __sys_recvmmsg() function. (CVE-2016-7117, Important)

Bug Fix(es):

• Previously, guest virtual machines (VMs) on a Hyper-V server cluster got in some cases rebooted during the graceful node failover test, because the host kept sending heartbeat packets independently of guests responding to them. This update fixes the bug by properly responding to all the heartbeat messages in the queue, even if they are pending. As a result, guest VMs no longer get rebooted under the described circumstances. (BZ#1391167)

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

The system must be rebooted for this update to take effect.

Affected Products

Updated Packages

• kernel-debug-devel-2.6.18-417.el5.x86_64.rpm
• kernel-debug-2.6.18-417.el5.ia64.rpm
• kernel-devel-2.6.18-417.el5.ppc64.rpm
• kernel-xen-2.6.18-417.el5.x86_64.rpm
• kernel-xen-2.6.18-417.el5.i686.rpm
• kernel-xen-devel-2.6.18-417.el5.i686.rpm
• kernel-headers-2.6.18-417.el5.ppc.rpm
• kernel-xen-2.6.18-417.el5.ia64.rpm
• kernel-debug-debuginfo-2.6.18-417.el5.ia64.rpm
• kernel-kdump-debuginfo-2.6.18-417.el5.s390x.rpm
• kernel-2.6.18-417.el5.s390x.rpm
• kernel-debug-debuginfo-2.6.18-417.el5.x86_64.rpm
• kernel-debug-2.6.18-417.el5.ppc64.rpm
• kernel-2.6.18-417.el5.src.rpm
• kernel-kdump-debuginfo-2.6.18-417.el5.ppc64.rpm
• kernel-devel-2.6.18-417.el5.ia64.rpm
• kernel-devel-2.6.18-417.el5.s390x.rpm
• kernel-debug-devel-2.6.18-417.el5.ia64.rpm
• kernel-headers-2.6.18-417.el5.ppc64.rpm
• kernel-doc-2.6.18-417.el5.noarch.rpm
• kernel-xen-devel-2.6.18-417.el5.x86_64.rpm
• kernel-debug-devel-2.6.18-417.el5.ppc64.rpm
• kernel-xen-debuginfo-2.6.18-417.el5.i686.rpm
• kernel-headers-2.6.18-417.el5.ia64.rpm
• kernel-devel-2.6.18-417.el5.i686.rpm
• kernel-debuginfo-common-2.6.18-417.el5.ia64.rpm
• kernel-debuginfo-common-2.6.18-417.el5.ppc64.rpm
• kernel-debuginfo-2.6.18-417.el5.s390x.rpm
• kernel-headers-2.6.18-417.el5.x86_64.rpm
• kernel-xen-debuginfo-2.6.18-417.el5.x86_64.rpm
• kernel-debug-devel-2.6.18-417.el5.s390x.rpm
• kernel-debuginfo-common-2.6.18-417.el5.s390x.rpm
• kernel-headers-2.6.18-417.el5.s390x.rpm
• kernel-PAE-debuginfo-2.6.18-417.el5.i686.rpm
• kernel-debug-debuginfo-2.6.18-417.el5.s390x.rpm
• kernel-xen-devel-2.6.18-417.el5.ia64.rpm
• kernel-PAE-devel-2.6.18-417.el5.i686.rpm
• kernel-debuginfo-2.6.18-417.el5.ppc64.rpm
• kernel-devel-2.6.18-417.el5.x86_64.rpm
• kernel-debug-debuginfo-2.6.18-417.el5.ppc64.rpm
• kernel-debug-2.6.18-417.el5.x86_64.rpm
• kernel-2.6.18-417.el5.ia64.rpm
• kernel-debuginfo-common-2.6.18-417.el5.x86_64.rpm
• kernel-xen-debuginfo-2.6.18-417.el5.ia64.rpm
• kernel-debuginfo-2.6.18-417.el5.x86_64.rpm
• kernel-headers-2.6.18-417.el5.i386.rpm
• kernel-debuginfo-2.6.18-417.el5.i686.rpm
• kernel-debuginfo-2.6.18-417.el5.ia64.rpm
• kernel-debug-devel-2.6.18-417.el5.i686.rpm
• kernel-debug-2.6.18-417.el5.i686.rpm
• kernel-kdump-devel-2.6.18-417.el5.s390x.rpm
• kernel-kdump-2.6.18-417.el5.ppc64.rpm
• kernel-2.6.18-417.el5.ppc64.rpm
• kernel-debug-debuginfo-2.6.18-417.el5.i686.rpm
• kernel-2.6.18-417.el5.x86_64.rpm
• kernel-2.6.18-417.el5.i686.rpm
• kernel-debuginfo-common-2.6.18-417.el5.i686.rpm
• kernel-debug-2.6.18-417.el5.s390x.rpm
• kernel-kdump-2.6.18-417.el5.s390x.rpm
• kernel-PAE-2.6.18-417.el5.i686.rpm
• kernel-kdump-devel-2.6.18-417.el5.ppc64.rpm

Fixes

• This content is not included.BZ - 1382268

CVEs

• CVE-2016-7117

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.