Linux Kernel fsl-mc Bus Double-Free Vulnerability in mc_dev Variable

A double-free vulnerability has been identified in the Linux kernel's fsl-mc bus implementation. The issue arises in versions of the kernel where the mc_dev variable, which references a field of an allocated mc_bus, is improperly deallocated. This flaw occurs when the MC device is a DPRC, leading to a scenario where the mc_bus is freed, but the mc_dev reference causes a second, erroneous deallocation.

Impact

Exploitation of this vulnerability leads to a double-free condition, which can commonly result in memory corruption and potentially allow for arbitrary code execution.