avcodec/rasc: Check uncompressed dlta size
authorMichael Niedermayer <michael@niedermayer.cc>
Tue, 22 Jan 2019 23:16:02 +0000 (00:16 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 30 Jan 2019 23:24:38 +0000 (00:24 +0100)
commitf4079d5174c20eddbc99eef6ebe98d411f8014c5
tree5b21c5f696ec9a8fa0be20098bb2dc7bc0081153
parentdb1c4acd02af4de5dfbea6012c296470679aa7a6
avcodec/rasc: Check uncompressed dlta size

We assume that if the compressed size is bigger than if each byte is encoded in a single raw packet
that the data is invalid.

Fixes: Out of memory
Fixes: 12208/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5648916473708544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/rasc.c