Description

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().

References 6

• git.kernel.org https://git.kernel.org/stable/c/28412b489b088fb88dff488305fd4e56bd47f6e4
• git.kernel.org https://git.kernel.org/stable/c/576312eb436326b44b7010f4d9ae2b698df075ea
• git.kernel.org https://git.kernel.org/stable/c/736159f7b296d7a95f7208eb4799639b1f8b16a0
• git.kernel.org https://git.kernel.org/stable/c/8503ac1a62075a085402e42a386b5c627c821a51
• git.kernel.org https://git.kernel.org/stable/c/8d19a7ab28c7b9c207db5c5282afa8cc8595bcdb
• git.kernel.org https://git.kernel.org/stable/c/bba7208765d26e5e36b87f21dacc2780b064f41f

Remediation