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author | Michael Niedermayer <michael@niedermayer.cc> | 2020-01-22 23:11:47 +0100 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-19 17:17:35 +0200 |
commit | 3919ee03ddcb52fbd4a5b0c205ec6ee8b7736625 (patch) | |
tree | 3e5351f468dc123405ab8a64a2748a126ccb2ad3 | |
parent | 1016074532cad374f0bfce641c9173bd4a814a66 (diff) | |
download | ffmpeg-3919ee03ddcb52fbd4a5b0c205ec6ee8b7736625.tar.gz |
avcodec/dpcm: Fix integer overflow in AV_CODEC_ID_GREMLIN_DPCM
Fixes: signed integer overflow: -2147479324 + -32568 cannot be represented in type 'int'
Fixes: 20103/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_GREMLIN_DPCM_fuzzer-5667667579240448
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 b1aecad9eae900b9c3054392994d150d5ae572c5)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r-- | libavcodec/dpcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dpcm.c b/libavcodec/dpcm.c index 7d3934ee35..5958081b66 100644 --- a/libavcodec/dpcm.c +++ b/libavcodec/dpcm.c @@ -367,7 +367,7 @@ static int dpcm_decode_frame(AVCodecContext *avctx, void *data, while (output_samples < samples_end) { uint8_t n = bytestream2_get_byteu(&gb); - *output_samples++ = s->sample[idx] += s->array[n]; + *output_samples++ = s->sample[idx] += (unsigned)s->array[n]; idx ^= 1; } } |