In ARM Trusted Firmware 1.2 and 1.3, a malformed firmware update SMC can result in copying unexpectedly large data into secure memory becau…

In ARM Trusted Firmware 1.2 and 1.3, a malformed firmware update SMC can result in copying unexpectedly large data into secure memory because of integer overflows. This affects certain cases involving execution of both AArch64 Generic Trusted Firmware (TF) BL1 code and other firmware update code.