ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Wed Oct 5 21:46:42 2022 +0200| [557aa7772e6cd646baa7bfd0046ac7e37442cff3] | committer: Michael Niedermayer
avformat/asfdec_o: Check offset before adding index entry Fixes: signed integer overflow: 9223372036854550860 + 530259564 cannot be represented in type 'long' Fixes: 49093/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-4697179192688640 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=557aa7772e6cd646baa7bfd0046ac7e37442cff3 --- libavformat/asfdec_o.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/asfdec_o.c b/libavformat/asfdec_o.c index e837ca62e7..2b407c016f 100644 --- a/libavformat/asfdec_o.c +++ b/libavformat/asfdec_o.c @@ -888,6 +888,8 @@ static int asf_read_simple_index(AVFormatContext *s, const GUIDParseTable *g) av_log(s, AV_LOG_ERROR, "Skipping failed in asf_read_simple_index.\n"); return offset; } + if (asf->first_packet_offset > INT64_MAX - asf->packet_size * pkt_num) + return AVERROR_INVALIDDATA; if (prev_pkt_num != pkt_num) { av_add_index_entry(st, asf->first_packet_offset + asf->packet_size * pkt_num, av_rescale(interval, i, 10000), _______________________________________________ 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".
