Issued:
2016-12-13
Updated:
2016-12-13

RHBA-2016:2944 - chrony bug fix update

Synopsis

chrony bug fix update

Type/Severity

Bug Fix Advisory None

Topic

Updated chrony packages that fix one bug are now available for Red Hat Enterprise Linux 6.

Description

The chrony suite, chronyd and chronyc, is an advanced implementation of the Network Time Protocol (NTP), specially designed to support systems with intermittent connections. It can synchronize the system clock with NTP servers, hardware reference clocks, and manual input. It can also operate as an NTPv4 (RFC 5905) server or peer to provide a time service to other computers in the network.

This update fixes the following bug:

  • When chronyd was configured with the smoothtime directive and the leaponly option to perform a server leap smear, the direction of smoothing could be determined incorrectly due to numerical errors in floating point operations. This consequently caused an assertion failure and chronyd terminated unexpectedly. A patch has been applied, which ensures that the direction is calculated and applied correctly when small offsets are employed in a time update. (BZ#1401533)

Users of chrony are advised to upgrade to these updated packages.

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 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 - 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

  • chrony-2.1.1-2.el6_8.i686.rpm
  • chrony-debuginfo-2.1.1-2.el6_8.s390x.rpm
  • chrony-2.1.1-2.el6_8.s390x.rpm
  • chrony-debuginfo-2.1.1-2.el6_8.x86_64.rpm
  • chrony-2.1.1-2.el6_8.x86_64.rpm
  • chrony-2.1.1-2.el6_8.ppc64.rpm
  • chrony-2.1.1-2.el6_8.src.rpm
  • chrony-debuginfo-2.1.1-2.el6_8.ppc64.rpm
  • chrony-debuginfo-2.1.1-2.el6_8.i686.rpm

Fixes

CVEs

(none)

References

(none)

Additional information