CVE-2025-40085
BaseFortify
Publication date: 2025-10-29
Last updated on: 2025-10-30
Assigner: kernel.org
Description
Description
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a NULL pointer dereference in the Linux kernel's ALSA usb-audio driver. Specifically, in the function try_to_register_card(), the code calls usb_ifnum_to_if() and passes its return value directly to usb_interface_claimed() without checking if it is NULL. If an invalid USB audio device is created, this can cause a NULL pointer dereference, potentially leading to a kernel crash or instability. The fix involves adding a check to ensure the interface pointer is valid before using it.
How can this vulnerability impact me? :
This vulnerability can cause a NULL pointer dereference in the Linux kernel when handling certain USB audio devices, which may lead to a kernel crash or system instability. This could result in denial of service or unexpected behavior on affected systems using the ALSA usb-audio driver.