From f4605770af712dd9d7b0136fe298f8aa52101011 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 15 Jul 2019 00:35:48 +0200 Subject: avcodec/ffwavesynth: More correct cast in wavesynth_seek() Fixes: signed integer overflow: 553590816 - -9223372036315799520 cannot be represented in type 'long' Fixes: 15743/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5705835377852416 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Nicolas George Signed-off-by: Michael Niedermayer --- libavcodec/ffwavesynth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libavcodec/ffwavesynth.c') diff --git a/libavcodec/ffwavesynth.c b/libavcodec/ffwavesynth.c index 1dbfaa5847..94a843e3ca 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, (uint32_t)ts - ws->cur_ts); + lcg_seek(&ws->dither_state, (uint32_t)ts - (uint32_t)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); -- cgit v1.2.3