Linux Kernel ASoC AMD ACP NULL Pointer Dereference Vulnerability in TDM Slot Management

A NULL pointer dereference vulnerability has been identified in the Linux kernel's ASoC AMD ACP component. This issue arises in the 'acp_i2s_set_tdm_slot' function, where chip data is not properly initialized. The vulnerability has been addressed by updating the chip data retrieval method to use 'dev_get_drvdata(dev->parent)', ensuring that the TDM slot management functions correctly without causing a NULL pointer dereference.

Impact

Exploitation of this vulnerability leads to a NULL pointer dereference, causing a crash or denial-of-service condition on the affected system.