Fixes: signed integer overflow: 9223126845747118112 - -2594073385365397472 cannot be represented in type 'long' Fixes: 34936/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-6739888002170880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/utils.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/utils.c b/libavformat/utils.c index 0fc55c8da2..0c64a7c6fb 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -3843,7 +3843,9 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options) break; } if (pkt->duration) { - if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) { + if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time + && (uint64_t)pkt->pts - st->start_time < INT64_MAX + ) { st->internal->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->internal->info->codec_info_duration + pkt->duration); } else st->internal->info->codec_info_duration += pkt->duration; -- 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".
