Fixes: signed integer overflow: 9230955872951340 - -9223372036854775808 cannot be represented in type 'long' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-6330481893572608
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/sbgdec.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c index 73b5be9007d..b2662ea4188 100644 --- a/libavformat/sbgdec.c +++ b/libavformat/sbgdec.c @@ -1447,6 +1447,13 @@ static av_cold int sbg_read_header(AVFormatContext *avf) st->duration = script.end_ts == AV_NOPTS_VALUE ? AV_NOPTS_VALUE : av_rescale(script.end_ts - script.start_ts, sbg->sample_rate, AV_TIME_BASE); + + if (st->duration != AV_NOPTS_VALUE && ( + st->duration < 0 || st->start_time > INT64_MAX - st->duration)) { + r = AVERROR_INVALIDDATA; + goto fail; + } + sti->cur_dts = st->start_time; r = encode_intervals(&script, st->codecpar, &inter); if (r < 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".
