ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Oct 1 00:07:20 2023 +0200| [7fedbc7606614cc1a6224effa8df762b6883bdc4] | committer: Michael Niedermayer
avcodec/h264_parser: saturate dts a bit Fixes: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6112289464123392 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7fedbc7606614cc1a6224effa8df762b6883bdc4 --- libavcodec/h264_parser.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/h264_parser.c b/libavcodec/h264_parser.c index 3574010a64..94cfbc481e 100644 --- a/libavcodec/h264_parser.c +++ b/libavcodec/h264_parser.c @@ -641,10 +641,10 @@ static int h264_parse(AVCodecParserContext *s, int64_t num = time_base.num * (int64_t)avctx->pkt_timebase.den; if (s->dts != AV_NOPTS_VALUE) { // got DTS from the stream, update reference timestamp - p->reference_dts = s->dts - av_rescale(s->dts_ref_dts_delta, num, den); + p->reference_dts = av_sat_sub64(s->dts, av_rescale(s->dts_ref_dts_delta, num, den)); } else if (p->reference_dts != AV_NOPTS_VALUE) { // compute DTS based on reference timestamp - s->dts = p->reference_dts + av_rescale(s->dts_ref_dts_delta, num, den); + s->dts = av_sat_add64(p->reference_dts, av_rescale(s->dts_ref_dts_delta, num, den)); } if (p->reference_dts != AV_NOPTS_VALUE && s->pts == AV_NOPTS_VALUE) _______________________________________________ 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".
