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>
Thu, 31 Jan 2019 16:28:23 +0000 (17:28 +0100)
commit0f1332309aff3924fcd740cf36c61f1f9e6f026e
tree93cf266484ca6b0a6e141060347b0ad16796867e
parentf5c9753bfdab20ad54fbdbbe85b52c82d0bb3c4b
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>
(cherry picked from commit f4079d5174c20eddbc99eef6ebe98d411f8014c5)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/rasc.c