CVE-2025-40314

Description

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget In the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget structure (pdev->gadget) was freed before its endpoints. The endpoints are linked via the ep_list in the gadget structure. Freeing the gadget first leaves dangling pointers in the endpoint list. When the endpoints are subsequently freed, this results in a use-after-free. Fix: By separating the usb_del_gadget_udc() operation into distinct "del" and "put" steps, cdnsp_gadget_free_endpoints() can be executed prior to the final release of the gadget structure with usb_put_gadget(). A patch similar to bb9c74a5bd14("usb: dwc3: gadget: Free gadget structure only after freeing endpoints").

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References

Other References

https://git.kernel.org/stable/c/0cf9a50af91fbdac3849f8d950e883a3eaa3ecea https://git.kernel.org/stable/c/37158ce6ba964b62d1e3eebd11f03c6900a52dd1 https://git.kernel.org/stable/c/87c5ff5615dc0a37167e8faf3adeeddc6f1344a3 https://git.kernel.org/stable/c/9c52f01429c377a2d32cafc977465f37b5384f77 https://git.kernel.org/stable/c/ea37884097a0931abb8e11e40eacfb25e9fdb5e9 https://git.kernel.org/stable/c/fdf573c517627a96f5040f988e9b21267806be5c

Frequently Asked Questions

What is CVE-2025-40314? +

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: gadget: Use-after-free during failed initialization and exit of cdnsp gadget In the __cdnsp_gadget_init() and cdnsp_gadget_exit() functions, the gadget structure (pdev->gadget) was freed before its endpoints. The endpoints are linked via the ep_list in the gadget structure. Freeing the gadget first leaves dangling pointers in the endpoint list. When the endpoints are subsequently freed, this results in a use-after-free. Fix: By separating the usb_del_gadget_udc() operation into distinct "del" and "put" steps, cdnsp_gadget_free_endpoints() can be executed prior to the final release of the gadget structure with usb_put_gadget(). A patch similar to bb9c74a5bd14("usb: dwc3: gadget: Free gadget structure only after freeing endpoints").

How do I check if I'm vulnerable to CVE-2025-40314? +

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.

CVE-2025-40314

Description

References

Other References

Frequently Asked Questions

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