ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Oct 17 15:15:08 2021 +0200| [97c3053d59f30f84b30efcc73ccf1b2e84b89006] | committer: Michael Niedermayer
avformat/dhav: Limit get_duration() iterations Fixes: Timeout Fixes: 39971/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-5756969890217984 Fixes: 39977/clusterfuzz-testcase-minimized-ffmpeg_dem_DHAV_fuzzer-5327123053674496 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=97c3053d59f30f84b30efcc73ccf1b2e84b89006 --- libavformat/dhav.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/dhav.c b/libavformat/dhav.c index b6bb25204c..6c1cdde32c 100644 --- a/libavformat/dhav.c +++ b/libavformat/dhav.c @@ -234,12 +234,13 @@ static int64_t get_duration(AVFormatContext *s) int64_t start_pos = avio_tell(s->pb); int64_t start = 0, end = 0; struct tm timeinfo; + int max_interations = 100000; if (!s->pb->seekable) return 0; avio_seek(s->pb, avio_size(s->pb) - 8, SEEK_SET); - while (avio_tell(s->pb) > 12) { + while (avio_tell(s->pb) > 12 && max_interations--) { if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) { int seek_back = avio_rl32(s->pb); _______________________________________________ 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".
