CVE-2025-40085

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix NULL pointer deference in try_to_register_card In try_to_register_card(), the return value of usb_ifnum_to_if() is passed directly to usb_interface_claimed() without a NULL check, which will lead to a NULL pointer dereference when creating an invalid USB audio device. Fix this by adding a check to ensure the interface pointer is valid before passing it to usb_interface_claimed().

EPSS

0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-25)

Published

2025-10-29

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/28412b489b088fb88dff488305fd4e56bd47f6e4
• https://git.kernel.org/stable/c/576312eb436326b44b7010f4d9ae2b698df075ea
• https://git.kernel.org/stable/c/736159f7b296d7a95f7208eb4799639b1f8b16a0
• https://git.kernel.org/stable/c/8503ac1a62075a085402e42a386b5c627c821a51
• https://git.kernel.org/stable/c/8d19a7ab28c7b9c207db5c5282afa8cc8595bcdb

Check your stackJSON