Every CVE Search/ Get API key

CVE-2021-3570

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when...

8.8 HighFix available

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.96%Up 2.0 points since Jul 10, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
CVE-2021-3570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
8.0 HighAV:N/AC:L/Au:S/C:P/I:P/A:C
Weakness
CWE-119, CWE-787
Updated
2026-11-02
CVE List No score

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
CVE-2021-3570
Weakness
CWE-119
Updated
2026-11-02
EUVDEUVD-2021-26880 No score

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
EUVD-2021-26880
Updated
2026-11-03
GitHub AdvisoriesGHSA-rwc4-5qx3-qg4w 8.8

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when...

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
GHSA-rwc4-5qx3-qg4w
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-119, CWE-787
Updated
2026-11-02
OSV 8.8

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
CVE-2021-3570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-3570 8.8

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
DEBIAN-CVE-2021-3570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 14 moreShow less
OSVOESA-2021-1368 8.8

linuxptp security update

Linuxptp is an implementation of the Precision Time Protocol (PTP) 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. Supporting legacy APIs and other platforms is not a goal.

Security Fix(es):

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-3570)

Record
OESA-2021-1368
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:2657 8.8

Red Hat Security Advisory: linuxptp security update

Record
RHSA-2021:2657
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:2658 8.8

Red Hat Security Advisory: linuxptp security update

Record
RHSA-2021:2658
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:2659 8.8

Red Hat Security Advisory: linuxptp security update

Record
RHSA-2021:2659
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2021:2660 8.8

Red Hat Security Advisory: linuxptp security update

Record
RHSA-2021:2660
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRLSA-2021:2660 8.8

Important: linuxptp security update

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.

Record
RLSA-2021:2660
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-3570 8.8

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before 1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1.

Record
UBUNTU-CVE-2021-3570
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2021:1102-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Validate the messageLength field of incoming messages. (bsc#1187646)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:1102-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:3202-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Fixed messageLength validation field of incoming messages (bsc#1187646).
Record
openSUSE-SU-2021:3202-1
Updated
2026-11-02
OSVSUSE-SU-2021:2443-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Validate the messageLength field of incoming messages. (bsc#1187646)
Record
SUSE-SU-2021:2443-1
Updated
2026-11-02
OSVSUSE-SU-2021:2472-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Validate the messageLength field of incoming messages. (bsc#1187646)
Record
SUSE-SU-2021:2472-1
Updated
2026-11-02
OSVSUSE-SU-2021:2545-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Validate the messageLength field of incoming messages. (bsc#1187646)
Record
SUSE-SU-2021:2545-1
Updated
2026-11-02
OSVSUSE-SU-2021:3202-1 No score

Security update for linuxptp

This update for linuxptp fixes the following issues:

  • CVE-2021-3570: Fixed messageLength validation field of incoming messages (bsc#1187646).
Record
SUSE-SU-2021:3202-1
Updated
2026-11-02
OSVUSN-6097-1 No score

linuxptp vulnerability

It was discovered that Linux PTP did not properly perform a length check when forwarding a PTP message between ports. A remote attacker could possibly use this issue to access sensitive information, execute arbitrary code, or cause a denial of service.

Record
USN-6097-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linuxptp
Debian:12
 before 3.1-2.1
3.1-2.1
linuxptp
Debian:13
 before 3.1-2.1
3.1-2.1
linuxptp
Debian:14
 before 3.1-2.1
3.1-2.1
linuxptp
Debian:9
 before 1.8-1+deb9u1, plus listed versions
1.8-1
1.8-1+deb9u1
linuxptp
Debian:10
 before 1.9.2-1+deb10u1, plus listed versions
1.9.2-1
1.9.2-1+deb10u1
linuxptp
openEuler:20.03-LTS-SP1
 before 2.0-5.oe1
2.0-5.oe1
linuxptp
openEuler:20.03-LTS-SP2
 before 2.0-5.oe1
2.0-5.oe1
linuxptp
Red Hat:rhel_eus:8.2::appstream
 before 0:2.0-4.el8_2.1
0:2.0-4.el8_2.1
linuxptp-debuginfo
Red Hat:rhel_eus:8.2::appstream
 before 0:2.0-4.el8_2.1
0:2.0-4.el8_2.1
linuxptp-debugsource
Red Hat:rhel_eus:8.2::appstream
 before 0:2.0-4.el8_2.1
0:2.0-4.el8_2.1
Show 46 moreShow less
Affected packages
PackageAffectedFixed
linuxptp
Red Hat:enterprise_linux:7::client
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp
Red Hat:enterprise_linux:7::server
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp
Red Hat:enterprise_linux:7::workstation
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:2.0-2.el7_9.1
0:2.0-2.el7_9.1
linuxptp
Red Hat:rhel_eus:8.1::appstream
 before 0:2.0-4.el8_1.1
0:2.0-4.el8_1.1
linuxptp-debuginfo
Red Hat:rhel_eus:8.1::appstream
 before 0:2.0-4.el8_1.1
0:2.0-4.el8_1.1
linuxptp-debugsource
Red Hat:rhel_eus:8.1::appstream
 before 0:2.0-4.el8_1.1
0:2.0-4.el8_1.1
linuxptp
Red Hat:enterprise_linux:8::appstream
 before 0:2.0-5.el8_4.1
0:2.0-5.el8_4.1
linuxptp-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:2.0-5.el8_4.1
0:2.0-5.el8_4.1
linuxptp-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:2.0-5.el8_4.1
0:2.0-5.el8_4.1
linuxptp
Rocky Linux:8
 before 0:2.0-5.el8_4.1
0:2.0-5.el8_4.1
linuxptp
SUSE:HPE Helion OpenStack 8
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:OpenStack Cloud 8
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:OpenStack Cloud 9
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:OpenStack Cloud Crowbar 8
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:OpenStack Cloud Crowbar 9
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server 12 SP2-BCL
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server 12 SP3-LTSS
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server 12 SP3-BCL
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Server 12 SP4-LTSS
 before 1.4-15.3.1
1.4-15.3.1
linuxptp
SUSE:Linux Enterprise Module for Server Applications 15 SP2
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise High Performance Computing 15-ESPOS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise High Performance Computing 15-LTSS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server 15-LTSS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server 15 SP1-BCL
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server 15 SP1-LTSS
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server for SAP Applications 15
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server for SAP Applications 15 SP1
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Manager Proxy 4.0
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Manager Retail Branch Server 4.0
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Manager Server 4.0
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Enterprise Storage 6
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server 12 SP5
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 1.8+git65.g303b08c-3.3.1
1.8+git65.g303b08c-3.3.1
linuxptp
SUSE:Linux Enterprise Module for Server Applications 15 SP3
 before 3.1.1-3.3.1
3.1.1-3.3.1
linuxptp
Ubuntu:Pro:16.04:LTS
 before 1.6-1ubuntu0.1~esm1, plus listed versions
1.5-11.5-21.6-1
1.6-1ubuntu0.1~esm1
linuxptp
Ubuntu:18.04:LTS
 before 1.8-1ubuntu0.1, plus listed versions
1.8-1
1.8-1ubuntu0.1
linuxptp
Ubuntu:20.04:LTS
 before 1.9.2-1ubuntu0.1, plus listed versions
1.9.2-1
1.9.2-1ubuntu0.1
linuxptp
openSUSE:Leap 15.2
 before 1.8+git65.g303b08c-lp152.4.3.1
1.8+git65.g303b08c-lp152.4.3.1
linuxptp
openSUSE:Leap 15.3
 before 3.1.1-3.3.1
3.1.1-3.3.1

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3570 is a high vulnerability (CVSS 8.8) in Debian Linux, published July 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.96%, the 87th percentile. Fixed in linuxptp 3.1-2.1.

References

Show 28 moreShow less
Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open