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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-15 00:04:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-21 19:21:14 +0200 |
| commit | 404c9331dde21f0e7b1b10649b2e348e854f45bb (patch) | |
| tree | b239bcb79555c0fec0a01c2570a106d4b2397dc5 | |
| parent | 875fbddd7d7b342f98ded3dfddf2ad7b30569b50 (diff) | |
| download | ffmpeg-404c9331dde21f0e7b1b10649b2e348e854f45bb.tar.gz | |
avcodec/ttadsp: Fix integer overflows in tta_filter_process_c()
Fixes: signed integer overflow: 822841647 + 1647055738 cannot be represented in type 'int'
Fixes: 39935/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TTA_fuzzer-4592657142251520
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 f24028c798397af720acb838357785aa705a8122)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ttadsp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/ttadsp.c b/libavcodec/ttadsp.c index 1d1443aee0..99dd66a0c2 100644 --- a/libavcodec/ttadsp.c +++ b/libavcodec/ttadsp.c @@ -47,9 +47,9 @@ static void tta_filter_process_c(int32_t *qmi, int32_t *dx, int32_t *dl, *error = *in; *in += (round >> shift); - dl[4] = -dl[5]; dl[5] = -dl[6]; - dl[6] = *in - dl[7]; dl[7] = *in; - dl[5] += dl[6]; dl[4] += dl[5]; + dl[4] = -(unsigned)dl[5]; dl[5] = -(unsigned)dl[6]; + dl[6] = *in -(unsigned)dl[7]; dl[7] = *in; + dl[5] += (unsigned)dl[6]; dl[4] += (unsigned)dl[5]; } av_cold void ff_ttadsp_init(TTADSPContext *c) |