CVE-2025-40207
Published Nov 12, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try() v4l2_subdev_call_state_try() macro allocates a subdev state with __v4l2_subdev_state_alloc(), but does not check the returned value. If __v4l2_subdev_state_alloc fails, it returns an ERR_PTR, and that would cause v4l2_subdev_call_state_try() to crash. Add proper error handling to v4l2_subdev_call_state_try().
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References
Other References
https://git.kernel.org/stable/c/5b0057459cdc243ffb35617603142dcace09c711
https://git.kernel.org/stable/c/94e6336dc1f06a06f5b4cd04d4a012bba34f2857
https://git.kernel.org/stable/c/a553530b3314a0bdc98cf114cdbe204551a70a00
https://git.kernel.org/stable/c/ed30811fbed40751deb952bde534aa2632dc0bf7
https://git.kernel.org/stable/c/f37df9a0eb5e43fcfe02cbaef076123dc0d79c7e
Frequently Asked Questions
What is CVE-2025-40207? +
In the Linux kernel, the following vulnerability has been resolved:
media: v4l2-subdev: Fix alloc failure check in v4l2_subdev_call_state_try()
v4l2_subdev_call_state_try() macro allocates a subdev state with
__v4l2_subdev_state_alloc(), but does not check the returned value. If
__v4l2_subdev_state_alloc fails, it returns an ERR_PTR, and that would
cause v4l2_subdev_call_state_try() to crash.
Add proper error handling to v4l2_subdev_call_state_try().
How do I check if I'm vulnerable to CVE-2025-40207? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.