ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Mar 15 18:25:56 2020 +0100| [c00a5fc71f144b5f70efcefb4910b8afd53c274a] | committer: Michael Niedermayer
avcodec/ffwavesynth: Fix integer overflow in computation of ddphi Fixes: signed integer overflow: 1302123111085380114 - -8319005078741256972 cannot be represented in type 'long' Fixes: 20991/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FFWAVESYNTH_fuzzer-5148554161291264 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Nicolas George <geo...@nsup.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit c85bf1631823e9089e59a474d5c6c0efc708c507) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c00a5fc71f144b5f70efcefb4910b8afd53c274a --- libavcodec/ffwavesynth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/ffwavesynth.c b/libavcodec/ffwavesynth.c index b9c63abb8d..998e1a4ad6 100644 --- a/libavcodec/ffwavesynth.c +++ b/libavcodec/ffwavesynth.c @@ -281,7 +281,7 @@ static int wavesynth_parse_extradata(AVCodecContext *avc) dphi1 = frac64(f1, (int64_t)avc->sample_rate << 16); dphi2 = frac64(f2, (int64_t)avc->sample_rate << 16); in->dphi0 = dphi1; - in->ddphi = (dphi2 - dphi1) / dt; + in->ddphi = (int64_t)(dphi2 - (uint64_t)dphi1) / dt; if (phi & 0x80000000) { phi &= ~0x80000000; if (phi >= i) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
