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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-10 21:16:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-05 12:43:08 +0200 |
| commit | 2a9ed44fe2bb2d85cb70adaacfc816b991451758 (patch) | |
| tree | ca8823e0eb7b4edffaeece07abcd4d13a6030324 | |
| parent | 186599c86f649e09ae0fdc5aa6000ca1b4ad8989 (diff) | |
| download | ffmpeg-2a9ed44fe2bb2d85cb70adaacfc816b991451758.tar.gz | |
avcodec/utvideodec: Fix integer overflow in decode_plane()
Fixes: signed integer overflow: 2147483594 + 142 cannot be represented in type 'int'
Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_fuzzer-5658568101724160
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 876cfa67f37e944b0f42cb67b2de4e2e06f52e82)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/utvideodec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c index 160528e007..56aecd514e 100644 --- a/libavcodec/utvideodec.c +++ b/libavcodec/utvideodec.c @@ -109,7 +109,7 @@ static int decode_plane(UtvideoContext *c, int plane_no, for (i = 0; i < width * step; i += step) { pix = fsym; if (use_pred) { - prev += pix; + prev += (unsigned)pix; pix = prev; } dest[i] = pix; |