Fix some integer overflow causing large memory allocations

Prevent integer overflow when computing image sizes.
Image index computations are done using 32 bit so this can cause easily
security issues. MAX_DATA_CHUNK is larger than the virtual
card limit, so this is not going to cause change in behaviours.
Comparing size calculation results with MAX_DATA_CHUNK will allow us to
catch overflows.
Prevent guest from allocating large amount of memory.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>

0 files changed, 0 insertions, 0 deletions