'During our tests we managed to leak several gigabytes of uninitialized physical pages by allocating and freeing blocks of 100 allocations continuously until the system was not able to return a contiguous physical page buffer. The full report goes deeper into the details of the vulnerability ( PDF alert), but this passage summarizes the end result: Economou attacked two separate issues with AMD's amdsps.sys driver for its Platform Security Processor (PSP), an embedded chip that manages chip security. The vulnerability allowed the researcher to extract multiple gigabytes of uninitialized physical memory pages.
