CVE-2021-47205

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the clk component of the Linux kernel, where unbinding a CCU driver unmaps the device's MMIO region but leaves its clocks/resets and their providers registered. This can cause a page fault later when some clock operation tries to perform MMIO. The fix involves separating the CCU initialization from the memory allocation and using a devres callback to unregister the clocks and resets. This also fixes a memory leak of the struct ccu reset and uses the correct owner for the clocks and resets.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.