We do not support this as we multiply by 1000 Fixes: signed integer overflow: -45318575073853696 * 1000 cannot be represented in type 'long' Fixes: 42804/clusterfuzz-testcase-minimized-ffmpeg_dem_LIVE_FLV_fuzzer-4630325425209344
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/flvdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 44a7e5f93cc..b9e36b3ff1b 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -461,6 +461,8 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t m d = av_int2double(avio_rb64(ioc)); if (isnan(d) || d < INT64_MIN || d > INT64_MAX) goto invalid; + if (current_array == × && (d <= INT64_MIN / 1000 || d >= INT64_MAX / 1000)) + goto invalid; current_array[0][i] = d; } if (times && filepositions) { -- 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".
