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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 50 |
|---|---|---|---|---|
 | 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
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02 Oct 2025 06:11Current
7High risk
Vulners AI Score7
CVSS 25.5
CVSS 3.17.1
EPSS0.01895