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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-11-20 18:45:45 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-08 23:19:14 +0100 |
| commit | 5ee4c376d0d95ba30d43e3e45197cfe82438b6ff (patch) | |
| tree | 29abda9f6186b1f160830b96caa28910f1e3d591 | |
| parent | 857c5fa9764182cea148ebcf2a8706b524bb3066 (diff) | |
| download | ffmpeg-5ee4c376d0d95ba30d43e3e45197cfe82438b6ff.tar.gz | |
avcodec/mlpdsp: Fix signed integer overflow, 2nd try
The outputted bits should match what is used in the lossless check
Fixes: runtime error: signed integer overflow: -538697856 * 256 cannot be represented in type 'int'
Fixes: 4326/clusterfuzz-testcase-minimized-5689449645080576
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 97c00edaa043043c29d985653e7e1687b56dfa23)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mlpdsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mlpdsp.c b/libavcodec/mlpdsp.c index 4e3a16c781..32a4503b64 100644 --- a/libavcodec/mlpdsp.c +++ b/libavcodec/mlpdsp.c @@ -117,7 +117,7 @@ int32_t ff_mlp_pack_output(int32_t lossless_check_data, (1U << output_shift[mat_ch]); lossless_check_data ^= (sample & 0xffffff) << mat_ch; if (is32) - *data_32++ = sample * 256; + *data_32++ = sample * 256U; else *data_16++ = sample >> 8; } |