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TI-2021-02519 Aliases CVE-2021-3570GHSA-rwc4-5qx3-qg4w

Memory corruption in linuxptp

Priority MEDIUM 43CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 6 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.02955 87th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 6 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—linuxptplinuxptp 3.1.1, linuxptp 2.0.1, linuxptp 1.9.3, linuxptp 1.8.1, linuxptp 1.7.1, linuxptp 1.6.1, linuxptp 1.5.1—No fix listedCNA
  • linuxptp Vendor— Affected linuxptp 3.1.1, linuxptp 2.0.1, linuxptp 1.9.3, linuxptp 1.8.1, linuxptp 1.7.1, linuxptp 1.6.1, linuxptp 1.5.1 Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:*before 1.5.1; 1.6.0 to before 1.6.1; 1.7.0 to before 1.7.1; 1.8.0 to before 1.8.1; 1.9.0 to before 1.9.3; 2.0.0 to before 2.0.1; 3.0.0 to before 3.1.1VulnerableLinuxptp Project
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*8.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
  • cpe:2.3:a:linuxptp_project:linuxptp:*:*:*:*:*:*:*:* Versions before 1.5.1; 1.6.0 to before 1.6.1; 1.7.0 to before 1.7.1; 1.8.0 to before 1.8.1; 1.9.0 to before 1.9.3; 2.0.0 to before 2.0.1; 3.0.0 to before 3.1.1 Vulnerable ·Linuxptp Project
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* Versions 8.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_tus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 4 advisories

  • RHSA-2021:2658 Released 2021-07-06 · Red Hat rating Important
    linuxptp security update
    • Red Hat Enterprise Linux Client (v. 7) linuxptp-2.0-2.el7_9.1
    • Red Hat Enterprise Linux Server (v. 7) linuxptp-2.0-2.el7_9.1
    • Red Hat Enterprise Linux Workstation (v. 7) linuxptp-2.0-2.el7_9.1
  • RHSA-2021:2660 Released 2021-07-06 · Red Hat rating Important
    linuxptp security update
    • Red Hat Enterprise Linux AppStream (v. 8) linuxptp-2.0-5.el8_4.1
  • RHSA-2021:2657 Released 2021-07-06 · Red Hat rating Important
    linuxptp security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.2) linuxptp-2.0-4.el8_2.1
Show 1 more Red Hat advisories
  • RHSA-2021:2659 Released 2021-07-06 · Red Hat rating Important
    linuxptp security update
    • Red Hat Enterprise Linux AppStream EUS (v. 8.1) linuxptp-2.0-4.el8_1.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    linuxptp — FEDORA-2021-a5b584004c

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    Show all 2 records → Advisory →
  • Advisory ·

    linuxptp — FEDORA-2021-1b42c2f458

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:2660
Red Hat Enterprise Linux AppStream EUS (v. 8.1)Fixed RHSA-2021:2659
Red Hat Enterprise Linux AppStream EUS (v. 8.2)Fixed RHSA-2021:2657
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:2658
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:2658
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:2658
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3570
  2. 2026-10-03 Alias added: GHSA-rwc4-5qx3-qg4w

References

Patch 1

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences