Linux Kernel up to 6.16.10/6.17.0 media stm32_csi_start null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.16.10/6.17.0. Affected is the function stm32_csi_start of the component media. The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2025-40015. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.16.10/6.17.0. It has been classified as critical. Affected is the function stm32_csi_start of the component media. 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: media: stm32-csi: Fix dereference before NULL check In 'stm32_csi_start', 'csidev->s_subdev' is dereferenced directly while assigning a value to the 'src_pad'. However the same value is being checked against NULL at a later point of time indicating that there are chances that the value can be NULL. Move the dereference after the NULL check.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-40015 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 271667 (Linux Distros Unpatched Vulnerability : CVE-2025-40015), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.16.11, 6.17.1 or 6.18-rc1 eliminates this vulnerability. Applying the patch 1f053d82e59c785b2b939cbed12f13657f84b296/4eeafff163e80d576c5efc1360ae310c0ceedd02/80eaf32672871bd2623ce6ba13ffc1f018756580 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 (271667) and CERT Bund (WID-SEC-2025-2350). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel

Productinfo

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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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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: 🔒

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Nessus ID: 271667
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-40015

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.16.11/6.17.1/6.18-rc1
Patch: 1f053d82e59c785b2b939cbed12f13657f84b296/4eeafff163e80d576c5efc1360ae310c0ceedd02/80eaf32672871bd2623ce6ba13ffc1f018756580

Timelineinfo

04/16/2025 CVE reserved
10/20/2025 +187 days Advisory disclosed
10/20/2025 +0 days VulDB entry created
02/12/2026 +115 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-40015 (🔒)
GCVE (CVE): GCVE-0-2025-40015
GCVE (VulDB): GCVE-100-329064
CERT Bund: WID-SEC-2025-2350 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/20/2025 22:19
Updated: 02/12/2026 19:21
Changes: 10/20/2025 22:19 (59), 10/27/2025 20:59 (2), 02/12/2026 19:21 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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