RHSA-2021:2660 — Security Advisory
Red Hat Security Advisory: linuxptp security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · July 7, 2021
Updated · November 22, 2025
Topic
An update for linuxptp is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
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.
Security Fix(es):
- linuxptp: missing length check of forwarded messages (CVE-2021-3570)
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.