app/aboot/aboot.c in the Qualcomm bootloader in Android before 2016-07-05 on Nexus 5 and 7 (2013) devices allows attackers to cause a denial of service (OS outage or buffer over-read) via a crafted application, aka Android internal bug 28822690 and Qualcomm internal bug CR822275.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.