CVE-2025-40015
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-20

Last updated on: 2025-10-21

Assigner: kernel.org

Description
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.
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Meta Information
Published
2025-10-20
Last Modified
2025-10-21
Generated
2026-06-16
AI Q&A
2025-10-20
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40015
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability occurs in the Linux kernel's stm32-csi media driver where a pointer ('csidev->s_subdev') is dereferenced before it is checked for NULL. This means the code attempts to use the pointer without confirming it is valid, which can lead to undefined behavior or crashes. The fix involved moving the dereference to after the NULL check to ensure safety.

Impact Analysis

If exploited or triggered, this vulnerability can cause the Linux kernel to dereference a NULL pointer, potentially leading to system crashes or instability. This can affect system reliability and availability.

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