CVE-2025-40116
Published Nov 12, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: usb: host: max3421-hcd: Fix error pointer dereference in probe cleanup The kthread_run() function returns error pointers so the max3421_hcd->spi_thread pointer can be either error pointers or NULL. Check for both before dereferencing it.
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References
Other References
https://git.kernel.org/stable/c/186e8f2bdba551f3ae23396caccd452d985c23e3
https://git.kernel.org/stable/c/3723c3dda1cc82c9bbca08fcbd46705a361bfd56
https://git.kernel.org/stable/c/3facf69a735e730ae36387f18780fe420708aa91
https://git.kernel.org/stable/c/89838fe5c6c010ff8d3924f22afd9c18c5c95310
https://git.kernel.org/stable/c/b0439e3762ac9ea580f714e1504a1827d1ad32f5
https://git.kernel.org/stable/c/b682ce44bf20ada752a2f6ce70d5a575c56f6a35
https://git.kernel.org/stable/c/e0e0ce06f3571be9b26790e4df56ba37b1de8543
https://git.kernel.org/stable/c/e68ea6de1d0551f90d7a2c75f82cb3ebe5e397dc
Frequently Asked Questions
What is CVE-2025-40116? +
In the Linux kernel, the following vulnerability has been resolved:
usb: host: max3421-hcd: Fix error pointer dereference in probe cleanup
The kthread_run() function returns error pointers so the
max3421_hcd->spi_thread pointer can be either error pointers or NULL.
Check for both before dereferencing it.
How do I check if I'm vulnerable to CVE-2025-40116? +
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.