Michael Niedermayer
79f6a1b96e
avcodec/scpr: Check y in first line loop in decompress_i()
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Fixes: out of array access
Fixes: 1478/clusterfuzz-testcase-minimized-5285486908145664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7ac5067146613997bb38442cb022d7f41321a706)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-14 00:21:49 +02:00
Paul B Mahol
807d5dcde9
avcodec/scpr: use correct linesize for prev frame
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-03-12 12:34:55 +01:00
Paul B Mahol
6d93e7d1a3
avcodec/scpr: fix top left prediction for special case when x is 0 for keyframes
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-03-03 12:28:24 +01:00
Paul B Mahol
86ab6b6e08
avcodec/scpr: check if total_freq is 0 in decode0
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Fixes SIGFPE, closes #6196 .
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-27 13:55:15 +01:00
Paul B Mahol
6d856b2579
avcodec/scpr: add support for older version
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-26 22:09:54 +01:00
Paul B Mahol
e01c32f260
avcodec/scpr: remove 4 dead store
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 19:49:39 +01:00
Paul B Mahol
0a28c50506
avcodec/scpr: improve motion vectors checking for out of buffer write
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 15:27:19 +01:00
Paul B Mahol
178cd50c47
avcodec/scpr: make sure that component value is <= 0x1F for 16 bpc
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 12:02:48 +01:00
Paul B Mahol
45ed942e7e
avcodec/scpr: improve check for out of range motion vectors
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 19:45:12 +01:00
Paul B Mahol
95a5af446b
avcodec/scpr: check that current row is in valid range
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Stops writing out of dst array.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 18:46:24 +01:00
Paul B Mahol
fd7af82c53
avcodec/scpr: do not allow out of array access for 16bit case
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 17:22:01 +01:00
Paul B Mahol
039011b6b0
avcodec: add ScreenPressor decoder
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-22 22:57:59 +01:00
