CVE-2022-50400

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> staging: greybus: audio_helper: remove unused and wrong debugfs usage<br /> <br /> In the greybus audio_helper code, the debugfs file for the dapm has the<br /> potential to be removed and memory will be leaked. There is also the<br /> very real potential for this code to remove ALL debugfs entries from the<br /> system, and it seems like this is what will really happen if this code<br /> ever runs. This all is very wrong as the greybus audio driver did not<br /> create this debugfs file, the sound core did and controls the lifespan<br /> of it.<br /> <br /> So remove all of the debugfs logic from the audio_helper code as there&amp;#39;s<br /> no way it could be correct. If this really is needed, it can come back<br /> with a fixup for the incorrect usage of the debugfs_lookup() call which<br /> is what caused this to be noticed at all.