Issued:
2016-10-31
Updated:
2016-10-31

RHSA-2016:2127 - Important: kernel security update

Synopsis

Important: kernel security update

Type/Severity

Security Advisory Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 5.6 Long Life.

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 race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system. (CVE-2016-5195, Important)

Red Hat would like to thank Phil Oester for reporting this issue.

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

ProductVersionArch
Red Hat Enterprise Linux Server - AUS5.6x86_64
Red Hat Enterprise Linux Server - AUS5.6ia64
Red Hat Enterprise Linux Server - AUS5.6i386

Updated Packages

  • kernel-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debuginfo-common-2.6.18-238.57.1.el5.i686.rpm
  • kernel-debug-devel-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-devel-2.6.18-238.57.1.el5.i686.rpm
  • kernel-xen-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-doc-2.6.18-238.57.1.el5.noarch.rpm
  • kernel-debug-debuginfo-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-devel-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-headers-2.6.18-238.57.1.el5.i386.rpm
  • kernel-PAE-2.6.18-238.57.1.el5.i686.rpm
  • kernel-2.6.18-238.57.1.el5.i686.rpm
  • kernel-xen-debuginfo-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-debug-devel-2.6.18-238.57.1.el5.i686.rpm
  • kernel-xen-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debug-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-2.6.18-238.57.1.el5.src.rpm
  • kernel-debuginfo-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-debug-debuginfo-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debuginfo-2.6.18-238.57.1.el5.i686.rpm
  • kernel-xen-debuginfo-2.6.18-238.57.1.el5.i686.rpm
  • kernel-PAE-devel-2.6.18-238.57.1.el5.i686.rpm
  • kernel-debuginfo-common-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debug-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-xen-devel-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-PAE-debuginfo-2.6.18-238.57.1.el5.i686.rpm
  • kernel-headers-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-xen-devel-2.6.18-238.57.1.el5.i686.rpm
  • kernel-debug-devel-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debug-debuginfo-2.6.18-238.57.1.el5.i686.rpm
  • kernel-debuginfo-common-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-xen-debuginfo-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-debuginfo-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-headers-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-debug-2.6.18-238.57.1.el5.i686.rpm
  • kernel-devel-2.6.18-238.57.1.el5.x86_64.rpm
  • kernel-xen-devel-2.6.18-238.57.1.el5.ia64.rpm
  • kernel-xen-2.6.18-238.57.1.el5.i686.rpm

Fixes

CVEs

References

Additional information