SUSE-SU-2025:20862-1

Source
https://www.suse.com/support/update/announcement/2025/suse-su-202520862-1/
Import Source
https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2025:20862-1.json
JSON Data
https://api.osv.dev/v1/vulns/SUSE-SU-2025:20862-1
Published
2025-10-17T12:05:08Z
Modified
2026-03-23T04:51:03Z
Summary
Security update for chrony
Details

This update for chrony fixes the following issues:

  • Update to version 4.8:

    • 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 >= 6.15
    • Validate refclock samples for reachability updates
  • Fix racy socket creation which allows privilege escalation to root (bsc#1246544)

  • Update to version 4.7:

    • 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
    • Don’t 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 < 3.6 and GnuTLS < 3.6.14
    • Drop support for building without POSIX threads
  • Update to version 4.6.1:

    • Add ntsaeads directive to enable only selected AEAD algorithms for NTS.
    • Negotiate use of compliant NTS keys with AES-128-GCM-SIV AEAD algorithm.
    • Switch to compliant NTS keys if first response from server is NTS NAK.
  • Drop rcFOO symlinks for CODE16 (PED-266).

  • Update to version 4.6:

    • Add activate option to local directive to set activation threshold
    • Add ipv4 and ipv6 options to server/pool/peer directive
    • Add kod option to ratelimit directive for server KoD RATE support
    • Add leapseclist directive to read NIST/IERS leap-seconds.list file
    • Add ptpdomain directive to set PTP domain for NTP over PTP
    • Allow disabling pidfile
    • Improve copy server option to accept unsynchronised status instantly
    • Log one selection failure on start
    • Add offset command to modify source offset correction
    • Add timestamp sources to ntpdata report
    • Fix crash on sources reload during initstepslew or RTC initialisation
    • Fix source refreshment to not repeat failed name resolving attempts
References

Affected packages

SUSE:Linux Micro 6.1 / chrony

Package

Name
chrony
Purl
pkg:rpm/suse/chrony&distro=SUSE%20Linux%20Micro%206.1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.8-slfo.1.1_1.1

Ecosystem specific

{
    "binaries":  [
        {
            "chrony":  "4.8-slfo.1.1_1.1",
            "chrony-pool-empty":  "4.8-slfo.1.1_1.1",
            "chrony-pool-suse":  "4.8-slfo.1.1_1.1"
        }
    ]
}

Database specific

source
"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2025:20862-1.json"