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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-21 22:43:23 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-07-08 08:57:53 +0200 |
| commit | e9dd3c7126097d7c8d4f137db9957b81a219aa2c (patch) | |
| tree | ea24c2008fd6995ecbe8c104841a0f5681fae915 | |
| parent | 8c022099351c04ae21e0b8696ea71a690ed03cd2 (diff) | |
| download | ffmpeg-e9dd3c7126097d7c8d4f137db9957b81a219aa2c.tar.gz | |
avcodec/ffwavesynth: use uint32_t to compute difference, it is enough
Fixes: signed integer overflow: 6494225984479297536 - -6043795377581187040 cannot be represented in type 'long'
Fixes: 15285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5632780307791872
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ffwavesynth.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ffwavesynth.c b/libavcodec/ffwavesynth.c index b2cc7c8fc1..793eada7a5 100644 --- a/libavcodec/ffwavesynth.c +++ b/libavcodec/ffwavesynth.c @@ -215,7 +215,7 @@ static void wavesynth_seek(struct wavesynth_context *ws, int64_t ts) ws->next_inter = i; ws->next_ts = i < ws->nb_inter ? ws->inter[i].ts_start : INF_TS; *last = -1; - lcg_seek(&ws->dither_state, ts - ws->cur_ts); + lcg_seek(&ws->dither_state, (uint32_t)ts - ws->cur_ts); if (ws->pink_need) { int64_t pink_ts_cur = (ws->cur_ts + PINK_UNIT - 1) & ~(PINK_UNIT - 1); int64_t pink_ts_next = ts & ~(PINK_UNIT - 1); |