CVE-2024-42861

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial...

7.5 HighPublic exploitFix available

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.56%Up 1.5 points since Sep 24, 2024

What each source reports

NVD Score used 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: CVE-2024-42861
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

CVE List 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: CVE-2024-42861
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

EUVDEUVD-2024-39814 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: EUVD-2024-39814
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xgfh-jv6x-46xv 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial...

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: GHSA-xgfh-jv6x-46xv
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVAZL-49731 7.5

CVE-2024-42861 affecting package linuxptp for versions less than 3.1.1-1

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: AZL-49731
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVAZL-49740 7.5

CVE-2024-42861 affecting package linuxptp for versions less than 3.1.1-1

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: AZL-49740
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: CVE-2024-42861
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2024-42861 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: DEBIAN-CVE-2024-42861
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2024-42861 7.5

An issue in IEEE 802.1AS linuxptp v.4.2 and before allowing a remote attacker to cause a denial of service via a crafted Pdelay_Req message to the time synchronization function

Record: UBUNTU-CVE-2024-42861
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

linuxptp project linuxptp

Affected packages

Affected packages
Package	Affected	Fixed
`linuxptp` Azure Linux:2	before 3.1.1-1	3.1.1-1
`linuxptp` Azure Linux:3	before 3.1.1-1	3.1.1-1
`linuxptp` Debian:12	All versions, plus listed versions 3.1.1-44.0-14.2-14.2-24.4-1	None known
`linuxptp` Debian:13	All versions, plus listed versions 4.2-14.2-24.4-1	None known
`linuxptp` Debian:14	All versions, plus listed versions 4.2-14.2-24.4-1	None known
`linuxptp` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.5-11.5-21.6-11.6-1ubuntu0.1~esm1	None known
`linuxptp` Ubuntu:18.04:LTS	All versions, plus listed versions 1.8-11.8-1ubuntu0.1	None known
`linuxptp` Ubuntu:20.04:LTS	All versions, plus listed versions 1.9.2-11.9.2-1ubuntu0.1	None known
`linuxptp` Ubuntu:22.04:LTS	All versions, plus listed versions 3.1-2.13.1.1-23.1.1-3	None known
`linuxptp` Ubuntu:24.04:LTS	All versions, plus listed versions 4.0-14.0-1ubuntu14.0-1ubuntu1.1	None known
`linuxptp` Ubuntu:25.10	All versions, plus listed versions 4.2-1ubuntu14.2-1ubuntu2	None known
`linuxptp` Ubuntu:26.10	All versions, plus listed versions 4.4-0ubuntu1	None known
`linuxptp` Ubuntu:26.04:LTS	All versions, plus listed versions 4.2-1ubuntu24.4-0ubuntu1	None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	qiupy123/CVE-2024-42861	2024-09-21

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

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

In short

CVE-2024-42861 is a high vulnerability (CVSS 7.5) in Linuxptp Project Linuxptp, published September 23, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.56%, the 75th percentile. Fixed in linuxptp 3.1.1-1.

References

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