In the Linux kernel, the following vulnerability has been resolved:
ASoC: mediatek: sof-common: Add NULL check for normal_link string
It's not granted that all entries of struct sofconnstream declare
a normal_link
(a non-SOF, direct link) string, and this is the case
for SoCs that support only SOF paths (hence do not support both direct
and SOF usecases).
For example, in the case of MT8188 there is no normallink string in any of the sofconn_stream entries and there will be more drivers doing that in the future.
To avoid possible NULL pointer KPs, add a NULL check for normal_link
.