SUSE-RU-2026:21014-1: moderate: Recommended update for chrony

[SLE-UPDATES]

# Recommended update for chrony

Announcement ID: SUSE-RU-2026:21014-1  
Release Date: 2026-04-09T11:57:51Z  
Rating: moderate  
References:

  * bsc#1246544

  
Affected Products:

  * SUSE Linux Micro 6.2

  
  
An update that has one fix can now be installed.

## Description:

This update for chrony fixes the following issues:

  * Add maxunreach option to limit selection of unreachable sources
  * Add -u option to chronyc to drop root privileges (default chronyc user is
    set by configure script)
  * Fix refclock extpps option to work on Linux greater than or equal to 6.15
  * Validate refclock samples for reachability updates
  * Fix racy socket creation (bsc#1246544)
  * Add opencommands directive to select remote monitoring commands
  * Add interval option to driftfile directive
  * Add waitsynced and waitunsynced options to local directive
  * Add sanity checks for integer values in configuration
  * Add support for systemd Type=notify service
  * Add RTC refclock driver
  * Allow PHC refclock to be specified with network interface name
  * Do not require multiple refclock samples per poll to simplify filter
    configuration
  * Keep refclock reachable when dropping samples with large delay
  * Improve quantile-based filtering to adapt faster to larger delay
  * Improve logging of selection failures
  * Detect clock interference from other processes
  * Try to reopen message log (-l option) on cyclelogs command
  * Fix sourcedir reloading to not multiply sources
  * Fix tracking offset after failed clock step
  * Drop support for NTS with Nettle less than 3.6 and GnuTLS less than 3.6.14
  * Drop support for building without POSIX threads

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-503=1

## Package List:

  * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64)
    * chrony-debugsource-4.8-160000.1.1
    * chrony-4.8-160000.1.1
    * chrony-debuginfo-4.8-160000.1.1
  * SUSE Linux Micro 6.2 (noarch)
    * chrony-pool-empty-4.8-160000.1.1
    * chrony-pool-suse-4.8-160000.1.1

## References:

  * https://bugzilla.suse.com/show_bug.cgi?id=1246544

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