Linux Kernel UCSI Driver Deadlock Vulnerability in DisplayPort Handling

A deadlock vulnerability has been identified in the Linux kernel's UCSI (USB Type-C Connector System Interface) driver, specifically in how it manages DisplayPort connections. The issue arises when the 'ucsi_displayport_remove_partner' function holds a mutex lock while waiting for a background task to complete, creating a deadlock situation. This vulnerability affects several versions of the Linux kernel.

Impact

Exploitation of this vulnerability leads to a deadlock condition, causing the system to hang or become unresponsive while waiting for the mutex to be released.