Integer Underflow (Wrap or Wraparound) vulnerability in Renesas arm-trusted-firmware. An integer underflow in image range check calculations could lead to bypassing address restrictions and loading of images to unallowed addresses.

Incorrect Calculation vulnerability in Renesas arm-trusted-firmware allows Local Execution of Code.

When checking whether a new image invades/overlaps with a previously loaded image the code neglects to consider a few cases. that could An attacker to bypass memory range restriction and overwrite an already loaded image partly or completely, which could result in code execution and bypass of secure boot.