mm-video-v4l2: venc: Use client allocated memory if available.
IL client may free the buffer and calls for free buffer on IL
component to free the buffer header. It may happen that the IL
component may reject the free buffer due to various reasons.
In such scenario, client might have already freed the memory
allocated by client (such scenario will appear in use buffer
mode of buffer allocation). Now accessing client buffer in
such scenario may lead to use after free vulnerability.
Added a flag to indicate if the client buffer is available to
perform any operation on the client allocated memory. If not,
restrict from doing any operation on client memory.
Change-Id: I45e4f117e98588ee7c888ec5c1cb2424bc7e5fa3
3 files changed