In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: soc-acpi-intel-rpl-match: add missing empty item There is no links_num in struct snd_soc_acpi_mach {}, and we test !link->num_adr as a condition to end the loop in hda_sdw_machine_select(). So an empty item in struct snd_soc_acpi_link_adr array is required.
https://git.kernel.org/stable/c/aa3109ee91fe09e696274e6ac44813df8d13678f
https://git.kernel.org/stable/c/5afc29ba44fdd1bcbad4e07246c395d946301580