CVE-2022-50767

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> fbdev: smscufx: Fix several use-after-free bugs<br /> <br /> Several types of UAFs can occur when physically removing a USB device.<br /> <br /> Adds ufx_ops_destroy() function to .fb_destroy of fb_ops, and<br /> in this function, there is kref_put() that finally calls ufx_free().<br /> <br /> This fix prevents multiple UAFs.