CVE-2025-40085

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux28787ff9fbeaf57684eb64cc33e2ec8ceedf21b5 < 736159f7b296d7a95f7208eb4799639b1f8b16a0affected
LinuxLinux39efc9c8a973ddff5918191525d1679d0fb368ea < 8d19a7ab28c7b9c207db5c5282afa8cc8595bcdbaffected
LinuxLinux39efc9c8a973ddff5918191525d1679d0fb368ea < 576312eb436326b44b7010f4d9ae2b698df075eaaffected
LinuxLinux39efc9c8a973ddff5918191525d1679d0fb368ea < bba7208765d26e5e36b87f21dacc2780b064f41faffected
LinuxLinux39efc9c8a973ddff5918191525d1679d0fb368ea < 8503ac1a62075a085402e42a386b5c627c821a51affected
LinuxLinux39efc9c8a973ddff5918191525d1679d0fb368ea < 28412b489b088fb88dff488305fd4e56bd47f6e4affected
LinuxLinux9d4f4dc3cd38e412c29a7626489fe48b79ebbf6caffected
LinuxLinux52076a41c128146c9df4a157e972cb17019313b1affected
LinuxLinux5.15.75 < 5.15.196affected
LinuxLinux5.19.17 < 5.20affected
LinuxLinux6.0.3 < 6.1affected
LinuxLinux6.1affected
LinuxLinux0 < 6.1unaffected
LinuxLinux5.15.196 <= 5.15.*unaffected
LinuxLinux6.1.158 <= 6.1.*unaffected
LinuxLinux6.6.114 <= 6.6.*unaffected
LinuxLinux6.12.55 <= 6.12.*unaffected
LinuxLinux6.17.5 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References