ASoC: Intel: sof_sdw: Prevent jump to NULL add_sidecar callback

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: sof_sdw: Prevent jump to NULL add_sidecar callback In create_sdw_dailink() check that sof_end->codec_info->add_sidecar is not NULL before calling it. The original code assumed that if include_sidecar is true, the codec on that link has an add_sidecar callback. But there could be other codecs on the same link that do not have an add_sidecar callback.

References

• https://git.kernel.org/stable/c/aea038062edfca9c6e5ddcecd4611d5a80113b4e
• https://git.kernel.org/stable/c/a5416c0fc9e77b69f853dfb1e78bc05a7c06a789
• https://git.kernel.org/stable/c/87cab86925b7fa4c1c977bc191ac549a3b23f0ea