VDB-339520 · CVE-2025-68752 · Nessus 281752

Linux Kernel up to 6.17.12/6.18.1 iavf ptp_clock_settime null pointer dereference

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5.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.17.12/6.18.1. It has been declared as critical. Impacted is the function ptp_clock_settime of the component iavf. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2025-68752. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.17.12/6.18.1 and classified as critical. This vulnerability affects the function ptp_clock_settime of the component iavf. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: iavf: Implement settime64 with -EOPNOTSUPP ptp_clock_settime() assumes every ptp_clock has implemented settime64(). Stub it with -EOPNOTSUPP to prevent a NULL dereference. The fix is similar to commit 329d050bbe63 ("gve: Implement settime64 with -EOPNOTSUPP").

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-68752 since 12/24/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 281752 (Linux Distros Unpatched Vulnerability : CVE-2025-68752), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.17.13, 6.18.2 or 6.19-rc1 eliminates this vulnerability. Applying the patch 9e3dbc3bb2e2aa728b49422b2e5344488f93f690/6d080f810ffd6b8e002ce5bee8b9c551ca2535c2/1e43ebcd5152b3e681a334cc6542fb21770c3a2e is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (281752) and CERT Bund (WID-SEC-2026-0009). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Microsoft Azure Linux
Debian Linux
Open Source Linux Kernel
SUSE Linux
SUSE openSUSE

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 281752
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-68752

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.17.13/6.18.2/6.19-rc1
Patch: 9e3dbc3bb2e2aa728b49422b2e5344488f93f690/6d080f810ffd6b8e002ce5bee8b9c551ca2535c2/1e43ebcd5152b3e681a334cc6542fb21770c3a2e

Timelineinfo

12/24/2025 CVE reserved
01/05/2026 +12 days Advisory disclosed
01/05/2026 +0 days VulDB entry created
02/13/2026 +39 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-68752 (🔒)
GCVE (CVE): GCVE-0-2025-68752
GCVE (VulDB): GCVE-100-339520
CERT Bund: WID-SEC-2026-0009 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 01/05/2026 11:10
Updated: 02/13/2026 09:39
Changes: 01/05/2026 11:10 (59), 01/06/2026 06:36 (7), 01/06/2026 07:14 (2), 01/08/2026 11:05 (1), 02/04/2026 10:47 (1), 02/13/2026 09:39 (1)
Complete: 🔍
Cache ID: 216::103

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