Linux Kernel up to 6.16-rc3 atm clip_push null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.1.142/6.6.95/6.12.35/6.15.4/6.16-rc3. The affected element is the function clip_push of the component atm. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2025-38251. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.142/6.6.95/6.12.35/6.15.4/6.16-rc3. It has been declared as critical. This vulnerability affects the function clip_push of the component atm. 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: atm: clip: prevent NULL deref in clip_push() Blamed commit missed that vcc_destroy_socket() calls clip_push() with a NULL skb. If clip_devs is NULL, clip_push() then crashes when reading skb->truesize.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-38251 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265749 (SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2025:03290-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.143, 6.6.96, 6.12.36, 6.15.5 or 6.16-rc4 eliminates this vulnerability. Applying the patch 88c88f91f4b3563956bb52e7a71a3640f7ece157/3c709dce16999bf6a1d2ce377deb5dd6fdd8cb08/a07005a77b18ae59b8471e7e4d991fa9f642b3c2/ede31ad949ae0d03cb4c5edd79991586ad7c8bb8/b993ea46b3b601915ceaaf3c802adf11e7d6bac6 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 (265749), EUVD (EUVD-2025-20810) and CERT Bund (WID-SEC-2025-1517). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Google Cloud Platform
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • NetApp ActiveIQ Unified Manager
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265749
Nessus Name: SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2025:03290-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.143/6.6.96/6.12.36/6.15.5/6.16-rc4
Patch: 88c88f91f4b3563956bb52e7a71a3640f7ece157/3c709dce16999bf6a1d2ce377deb5dd6fdd8cb08/a07005a77b18ae59b8471e7e4d991fa9f642b3c2/ede31ad949ae0d03cb4c5edd79991586ad7c8bb8/b993ea46b3b601915ceaaf3c802adf11e7d6bac6

Timelineinfo

04/16/2025 CVE reserved
07/09/2025 +84 days Advisory disclosed
07/09/2025 +0 days VulDB entry created
05/02/2026 +297 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38251 (🔒)
GCVE (CVE): GCVE-0-2025-38251
GCVE (VulDB): GCVE-100-315772
EUVD: 🔒
CERT Bund: WID-SEC-2025-1517 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 07/09/2025 13:56
Updated: 05/02/2026 11:21
Changes: 07/09/2025 13:56 (59), 07/09/2025 15:33 (1), 08/23/2025 03:24 (7), 09/23/2025 22:47 (2), 09/28/2025 11:01 (1), 11/02/2025 22:00 (1), 12/19/2025 08:37 (11), 01/30/2026 22:44 (1), 05/02/2026 11:21 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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