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8 Commits

Author SHA1 Message Date
Michael Niedermayer
3b8d5bcc31 avcodec/mv30: Fix integer overflows in idct2_1d() 
Fixes: signed integer overflow: 6500736 * 473 cannot be represented in type 'int'
Fixes: 23259/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5179394271477760

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-07-02 17:18:55 +02:00
Michael Niedermayer
75e2ac4f07 avcodec/mv30: check mode_size vs. input space 
Fixes: Timeout (longer than my patience vs 1sec)
Fixes: 22984/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5630021988515840

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-06-14 19:17:07 +02:00
Michael Niedermayer
7f817853cd avcodec/mv30: Fix multiple integer overflows in idct_1d() 
Fixes: signed integer overflow: -4869937 * 473 cannot be represented in type 'int'
Fixes: 21934/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5667289925156864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-06-04 23:58:49 +02:00
Michael Niedermayer
e73a251680 avcodec/mv30: Do not allow MVs outside the allocated image 
Fixes: out of array read
Fixes: 21804/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MV30_fuzzer-5673678898724864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2020-06-04 23:58:49 +02:00
Limin Wang
b1cc6b9496 avcodec/mv30: fix warning: suggest braces around initialization of subobject [-Wmissing-braces] 
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
 2020-05-14 09:15:25 +08:00
Peter Ross
1b59f3f844 avcodec/mv30: use aandcttables 2020-04-17 19:34:02 +10:00
Peter Ross
06dab51e68 avcodec/mv30: remove unused table elements 2020-04-17 19:34:02 +10:00
Paul B Mahol
481ebb1c8b avcodec: add MV30 decoder 2020-04-10 12:22:09 +02:00