Issued:
2017-09-26
Updated:
2017-09-26

RHSA-2017:2795 - 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 6.

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 flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable (PIE), the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID (or otherwise privileged) PIE binary could use this flaw to escalate their privileges on the system. (CVE-2017-1000253, Important)

Red Hat would like to thank Qualys Research Labs 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 for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • perf-debuginfo-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-debug-devel-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-devel-2.6.32-696.10.3.el6.i686.rpm
  • kernel-headers-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-2.6.32-696.10.3.el6.src.rpm
  • python-perf-debuginfo-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debug-debuginfo-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debuginfo-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-devel-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-kdump-devel-2.6.32-696.10.3.el6.s390x.rpm
  • perf-debuginfo-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-debuginfo-2.6.32-696.10.3.el6.i686.rpm
  • kernel-devel-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-debug-2.6.32-696.10.3.el6.i686.rpm
  • kernel-debug-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-debuginfo-common-x86_64-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-bootwrapper-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-debuginfo-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-doc-2.6.32-696.10.3.el6.noarch.rpm
  • kernel-headers-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debug-debuginfo-2.6.32-696.10.3.el6.i686.rpm
  • kernel-debug-debuginfo-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-debug-devel-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debuginfo-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-kdump-debuginfo-2.6.32-696.10.3.el6.s390x.rpm
  • perf-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-debuginfo-common-s390x-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-firmware-2.6.32-696.10.3.el6.noarch.rpm
  • kernel-debug-devel-2.6.32-696.10.3.el6.s390x.rpm
  • perf-debuginfo-2.6.32-696.10.3.el6.i686.rpm
  • kernel-headers-2.6.32-696.10.3.el6.s390x.rpm
  • python-perf-2.6.32-696.10.3.el6.i686.rpm
  • kernel-debug-devel-2.6.32-696.10.3.el6.i686.rpm
  • python-perf-2.6.32-696.10.3.el6.ppc64.rpm
  • python-perf-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-abi-whitelists-2.6.32-696.10.3.el6.noarch.rpm
  • python-perf-debuginfo-2.6.32-696.10.3.el6.ppc64.rpm
  • perf-2.6.32-696.10.3.el6.i686.rpm
  • python-perf-debuginfo-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debug-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-debuginfo-common-i686-2.6.32-696.10.3.el6.i686.rpm
  • kernel-kdump-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-2.6.32-696.10.3.el6.ppc64.rpm
  • kernel-2.6.32-696.10.3.el6.s390x.rpm
  • perf-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-2.6.32-696.10.3.el6.i686.rpm
  • kernel-debug-2.6.32-696.10.3.el6.x86_64.rpm
  • perf-debuginfo-2.6.32-696.10.3.el6.x86_64.rpm
  • python-perf-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-debug-debuginfo-2.6.32-696.10.3.el6.s390x.rpm
  • kernel-devel-2.6.32-696.10.3.el6.x86_64.rpm
  • perf-2.6.32-696.10.3.el6.x86_64.rpm
  • kernel-headers-2.6.32-696.10.3.el6.i686.rpm
  • kernel-debuginfo-common-ppc64-2.6.32-696.10.3.el6.ppc64.rpm
  • python-perf-debuginfo-2.6.32-696.10.3.el6.i686.rpm

Fixes

CVEs

References

Additional information