Fixes: signed integer overflow: 7958120835074169528 * 9 cannot be represented in type 'long long' Fixes: 23382/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-6230683226996736
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/avidec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 5fc3e01aa9..df677a1618 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -439,7 +439,7 @@ static int calculate_bitrate(AVFormatContext *s) maxpos = FFMAX(maxpos, st->index_entries[j-1].pos); lensum += len; } - if (maxpos < avi->io_fsize*9/10) // index does not cover the whole file + if (maxpos < av_rescale(avi->io_fsize, 9, 10)) // index does not cover the whole file return 0; if (lensum*9/10 > maxpos || lensum < maxpos*9/10) // frame sum and filesize mismatch return 0; -- 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".
