Michael Niedermayer (12019-09-06): > Fixes: signed integer overflow: 9223371075321077760 * 2 cannot be represented > in type 'long' > Fixes: > 16447/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5698937431785472 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > --- > libavcodec/ffwavesynth.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/libavcodec/ffwavesynth.c b/libavcodec/ffwavesynth.c > index cfd0951d8f..8079e34539 100644 > --- a/libavcodec/ffwavesynth.c > +++ b/libavcodec/ffwavesynth.c > @@ -220,7 +220,7 @@ static void wavesynth_seek(struct wavesynth_context *ws, > int64_t ts) > int64_t pink_ts_cur = (ws->cur_ts + PINK_UNIT - 1) & ~(PINK_UNIT - > 1); > int64_t pink_ts_next = ts & ~(PINK_UNIT - 1); > int pos = ts & (PINK_UNIT - 1); > - lcg_seek(&ws->pink_state, (pink_ts_next - pink_ts_cur) * 2);
> + lcg_seek(&ws->pink_state, (pink_ts_next - pink_ts_cur) * 2ULL);
Casting (pink_ts_next - pink_ts_cur) to uint32_t seems like a better
idea.
> if (pos) {
> pink_fill(ws);
> ws->pink_pos = pos;
Regards,
--
Nicolas George
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