CVE catalog
CVE-2021-3571
linuxptp: CVE-2021-3571
- Severity
- High · CVSS 7.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.90% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | linuxptp | sid | 4.4-1 | fixed |
| Debian | linuxptp | forky | 4.4-1 | fixed |
| Debian | linuxptp | trixie | 4.2-1 | fixed |
| Debian | linuxptp | bookworm | 3.1.1-4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | linuxptp | source | sid | 3.1-2.1 | not yet assigned | Not reported | [990749] |
| Debian | linuxptp | source | forky | 3.1-2.1 | not yet assigned | Not reported | [990749] |
| Debian | linuxptp | source | trixie | 3.1-2.1 | not yet assigned | Not reported | [990749] |
| Debian | linuxptp | source | bookworm | 3.1-2.1 | not yet assigned | Not reported | [990749] |
OpenFactory catalog packages
References
- [https://access.redhat.com/errata/RHSA-2021:4321]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_4321.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-3571]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-3571]
- [https://security-tracker.debian.org/tracker/CVE-2021-3571]
- [https://wid.cert-bund.de/.well-known/csaf/white/2021/wid-sec-w-2022-0571.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]