tree b4674aab555e1859b4a006551ab5c3d4adba36dd
parent 1156cd7408bdb85711f28afa73392a5b0a912417
author Tom Taylor <tomtaylor@google.com> 1480623644 -0800
committer gitbuildkicker <android-build@google.com> 1482187291 -0800

32322450 Security Vulnerability - heap buffer overflow in libgiftranscode.so

* No range checking was done on the background color index. Add range
checking and bail if the color index is out of range.

* Test
Manual
- tested sending the gif attached in the bug.
- tested sending a 3.5mb gif to verify the gif transcoding was taking place.
- tested on arm64, arm, and x86 devices.

Change-Id: Id16ddccf05c8472ddebc1284b2a928dafd1be551
Fixes: 32322450
(cherry picked from commit bcc1f62715f8005684ac6b798d0d54224394e975)