Fixes: signed integer overflow: 2314885530818453536 - -9070214327174160352 cannot be represented in type 'long' Fixes: 31000/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-6558389742206976
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 7e7e1f6954..3f982d07cf 100644 --- a/libavcodec/ffwavesynth.c +++ b/libavcodec/ffwavesynth.c @@ -188,7 +188,7 @@ static uint64_t frac64(uint64_t a, uint64_t b) static uint64_t phi_at(struct ws_interval *in, int64_t ts) { - uint64_t dt = ts - in->ts_start; + uint64_t dt = ts - (uint64_t)in->ts_start; uint64_t dt2 = dt & 1 ? /* dt * (dt - 1) / 2 without overflow */ dt * ((dt - 1) >> 1) : (dt >> 1) * (dt - 1); return in->phi0 + dt * in->dphi0 + dt2 * in->ddphi; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
