Issued:
2016-01-25
Updated:
2016-01-25

RHSA-2016:0065 - Important: kernel-rt security update

Synopsis

Important: kernel-rt security update

Type/Severity

Security Advisory Important

Topic

Updated kernel-rt packages that fix one security issue are now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

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

  • A use-after-free flaw was found in the way the Linux kernel's key management subsystem handled keyring object reference counting in certain error path of the join_session_keyring() function. A local, unprivileged user could use this flaw to escalate their privileges on the system. (CVE-2016-0728, Important)

Red Hat would like to thank the Perception Point research team for reporting this issue.

All kernel-rt users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Real Time7x86_64
Red Hat Enterprise Linux for Real Time for x86_64 - Extended Life Cycle Support7x86_64

Updated Packages

  • kernel-rt-debug-devel-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-debug-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-3.10.0-327.4.5.rt56.206.el7_2.src.rpm
  • kernel-rt-trace-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-trace-devel-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-devel-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-trace-debuginfo-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm
  • kernel-rt-doc-3.10.0-327.4.5.rt56.206.el7_2.noarch.rpm
  • kernel-rt-debug-3.10.0-327.4.5.rt56.206.el7_2.x86_64.rpm

Fixes

CVEs

References

Additional information