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7 Commits

Author SHA1 Message Date
Michael Niedermayer
9f4af97aff avcodec/rasc: Move ff_get_buffer() after frame checks 
If the frame1/2 checks fail this avoids doing the allocation of a new frame

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2019-01-31 00:24:38 +01:00
Michael Niedermayer
f4079d5174 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>
 2019-01-31 00:24:38 +01:00
Michael Niedermayer
092cb17983 avcodec/rasc: Check that the number of moves is less than or equal the number of pixels 
Fixes: OOM
Fixes: 10307/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5393974559244288

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-16 09:49:07 +01:00
Michael Niedermayer
52ba824c65 avcodec/rasc: Check input space before reading chunk 
Fixes: Timeout
Fixes: 11118/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5652564066959360

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-14 23:24:20 +01:00
Michael Niedermayer
f515c978f6 avcodec/rasc: unref both frames on reinit 
Fixes: integer overflow
Fixes: inconsistent frame dimensions
Fixes: 10454/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5656301162463232

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-10-03 11:14:40 +02:00
Michael Niedermayer
9a9034958a avcodec/rasc: Fix off by 1 error in vertical coordinate 
Fixes: out of array read
Fixes: 10311/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-4856330905452544

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-10-03 11:14:17 +02:00
Paul B Mahol
a5278b672a avcodec: add RemotelyAnywhere Screen Capture decoder 2018-09-08 15:59:10 +02:00