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Medium RLSA-2021:4321 1 CVE

Moderate: linuxptp security, bug fix, and enhancement update

Published Nov 9, 2021 · Updated Feb 5, 2026

Summary

The linuxptp packages provide Precision Time Protocol (PTP) implementation for Linux according to IEEE standard 1588 for Linux. The dual design goals are to provide a robust implementation of the standard and to use the most relevant and modern Application Programming Interfaces (API) offered by the Linux kernel.

The following packages have been upgraded to a later upstream version: linuxptp (3.1.1). (BZ#1895005)

Security Fix(es):

* linuxptp: wrong length of one-step follow-up in transparent clock (CVE-2021-3571)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 linuxptp 0:3.1.1-1.el8

Vulnerabilities 1

  • Unscored —

    A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture …

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1895005
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1966241