Issued:
2017-02-15
Updated:
2017-02-15

RHSA-2017:0270 - 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 7.1 Extended Update Support.

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 kernel's socket recvmmsg subsystem. This may allow 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, an XFS corruption in some cases occurred on Seagate 8TB drive based volumes after a planned system shutdown or reboot, when a disk write back cache was used. With this update, the megaraid_sas driver has been fixed and the XFS corruption no longer occurs in the described scenario. (BZ#1398177)

  • Previously, booting a kdump kernel in some cases failed with this error:

    Kernel panic - not syncing: Watchdog detected hard LOCKUP on CPU 0.

This update ensures that the hpet timer software counters, including hpet_default_delta and hpet_t1_cmp, are initialized before an interrupt request is registered, and the kdump kernel now boots without the mentioned error message. (BZ#1404180)

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 for x86_64 - Extended Update Support7.1x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.1ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.1ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.1s390x
Red Hat Enterprise Linux EUS Compute Node7.1x86_64

Updated Packages

  • kernel-bootwrapper-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debug-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-abi-whitelists-3.10.0-229.48.1.el7.noarch.rpm
  • kernel-devel-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-headers-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-3.10.0-229.48.1.el7.src.rpm
  • kernel-debuginfo-common-x86_64-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-tools-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • python-perf-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-kdump-debuginfo-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-tools-libs-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-bootwrapper-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-debug-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • perf-debuginfo-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-headers-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debuginfo-common-ppc64-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-debug-devel-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-debuginfo-3.10.0-229.48.1.el7.s390x.rpm
  • perf-debuginfo-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-debug-devel-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-tools-debuginfo-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-debuginfo-3.10.0-229.48.1.el7.x86_64.rpm
  • perf-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-debug-debuginfo-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-kdump-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-tools-libs-devel-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-debuginfo-common-s390x-3.10.0-229.48.1.el7.s390x.rpm
  • python-perf-3.10.0-229.48.1.el7.x86_64.rpm
  • python-perf-debuginfo-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-debuginfo-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debug-devel-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-headers-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-tools-libs-devel-3.10.0-229.48.1.el7.ppc64.rpm
  • perf-debuginfo-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • python-perf-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-3.10.0-229.48.1.ael7b.src.rpm
  • kernel-devel-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-devel-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-debug-debuginfo-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-tools-debuginfo-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debuginfo-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-debug-debuginfo-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-devel-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-tools-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-tools-debuginfo-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-tools-libs-3.10.0-229.48.1.el7.x86_64.rpm
  • perf-debuginfo-3.10.0-229.48.1.el7.ppc64.rpm
  • python-perf-debuginfo-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-tools-libs-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debug-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-headers-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-kdump-devel-3.10.0-229.48.1.el7.s390x.rpm
  • python-perf-debuginfo-3.10.0-229.48.1.el7.s390x.rpm
  • kernel-doc-3.10.0-229.48.1.ael7b.noarch.rpm
  • kernel-doc-3.10.0-229.48.1.el7.noarch.rpm
  • perf-3.10.0-229.48.1.el7.x86_64.rpm
  • perf-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debuginfo-common-ppc64le-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debug-devel-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-tools-libs-devel-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-debug-debuginfo-3.10.0-229.48.1.el7.x86_64.rpm
  • perf-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-debug-3.10.0-229.48.1.el7.x86_64.rpm
  • python-perf-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • python-perf-debuginfo-3.10.0-229.48.1.el7.ppc64.rpm
  • kernel-3.10.0-229.48.1.ael7b.ppc64le.rpm
  • kernel-abi-whitelists-3.10.0-229.48.1.ael7b.noarch.rpm
  • kernel-3.10.0-229.48.1.el7.x86_64.rpm
  • kernel-tools-3.10.0-229.48.1.el7.ppc64.rpm

Fixes

CVEs

References

Additional information