Heap-based buffer overflow in the decode_dds1 function in libavcodec/dfa.c in FFmpeg before 2.8.12, 3.0.x before 3.0.8, 3.1.x before 3.1.8, 3.2.x before 3.2.5, and 3.3.x before 3.3.1 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file.
https://github.com/FFmpeg/FFmpeg/commit/f52fbf4f3ed02a7d872d8a102006f29b4421f360
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1345