Linux Kernel up to 6.6.99/6.12.39/6.15.7 ice_lag_is_switchdev_running null pointer dereference

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

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.6.99/6.12.39/6.15.7. This affects the function ice_lag_is_switchdev_running. The manipulation results in null pointer dereference. This vulnerability was named CVE-2025-38526. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.99/6.12.39/6.15.7. It has been classified as critical. Affected is the function ice_lag_is_switchdev_running. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ice: add NULL check in eswitch lag check The function ice_lag_is_switchdev_running() is being called from outside of the LAG event handler code. This results in the lag->upper_netdev being NULL sometimes. To avoid a NULL-pointer dereference, there needs to be a check before it is dereferenced.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-38526 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 270738 (openSUSE 15 Security Update : kernel (SUSE-SU-2025:03634-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.100, 6.12.40 or 6.15.8 eliminates this vulnerability. Applying the patch 27591d926191e42b2332e4bad3bcd3a49def393b/5a5d64f0eec82076b2c09fee2195d640cfbe3379/245917d3c5ed7c6ae720302b64eac5c6f0c85177/3ce58b01ada408b372f15b7c992ed0519840e3cf 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 (270738) and CERT Bund (WID-SEC-2025-1858). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • IBM Security Verify Access

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

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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: 270738
Nessus Name: openSUSE 15 Security Update : kernel (SUSE-SU-2025:03634-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.100/6.12.40/6.15.8
Patch: 27591d926191e42b2332e4bad3bcd3a49def393b/5a5d64f0eec82076b2c09fee2195d640cfbe3379/245917d3c5ed7c6ae720302b64eac5c6f0c85177/3ce58b01ada408b372f15b7c992ed0519840e3cf

Timelineinfo

04/16/2025 CVE reserved
08/16/2025 +122 days Advisory disclosed
08/16/2025 +0 days VulDB entry created
01/30/2026 +167 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38526 (🔒)
GCVE (CVE): GCVE-0-2025-38526
GCVE (VulDB): GCVE-100-320388
CERT Bund: WID-SEC-2025-1858 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 08/16/2025 14:37
Updated: 01/30/2026 18:44
Changes: 08/16/2025 14:37 (58), 08/19/2025 10:17 (1), 09/28/2025 08:53 (7), 10/03/2025 13:23 (1), 10/12/2025 18:03 (1), 10/18/2025 17:25 (2), 11/01/2025 19:49 (1), 11/19/2025 01:37 (10), 01/30/2026 18:44 (1)
Complete: 🔍
Cache ID: 216::103

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