A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. This flaw affects linuxptp versions before 3.1.1 and before 2.0.1.
| Reporter | Title | Published | Views | Family All 49 |
|---|---|---|---|---|
 | CVE-2021-3571 | 9 Jul 202111:15 | – | attackerkb |
 | Amazon Linux 2 : linuxptp (ALAS-2021-1705) | 16 Sep 202100:00 | – | nessus |
| AlmaLinux 8 : linuxptp (ALSA-2021:4321) | 9 Feb 202200:00 | – | nessus |
| CentOS 8 : linuxptp (CESA-2021:4321) | 11 Nov 202100:00 | – | nessus |
| CentOS 9 : linuxptp-3.1.1-2.el9 | 29 Feb 202400:00 | – | nessus |
| EulerOS 2.0 SP8 : linuxptp (EulerOS-SA-2021-2473) | 24 Sep 202100:00 | – | nessus |
| MiracleLinux 8 : linuxptp-3.1.1-1.el8 (AXSA:2021-2668:04) | 20 Jan 202600:00 | – | nessus |
| Oracle Linux 8 : linuxptp (ELSA-2021-4321) | 17 Nov 202100:00 | – | nessus |
| Photon OS 3.0: Linuxptp PHSA-2021-3.0-0265 | 15 Jul 202100:00 | – | nessus |
| Photon OS 4.0: Linuxptp PHSA-2021-4.0-0059 | 15 Jul 202100:00 | – | nessus |
10
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
02 Oct 2025 06:11Current
7High risk
Vulners AI Score7
CVSS 25.5
CVSS 3.17.1
EPSS0.01895