ffmpeg | branch: release/4.3 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Feb 15 20:41:31 2021 +0100| [959d2eb7c225e027cdabf27eb3afa7a6172acac0] | committer: Michael Niedermayer
avformat/mov: Check element count in mov_metadata_hmmt() Fixes: Timeout Fixes: 30325/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6048395703746560 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 1d277b92fa4c149d589e6828d4e18ad578406f1f) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=959d2eb7c225e027cdabf27eb3afa7a6172acac0 --- libavformat/mov.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 697b6908d1..702fc7fac5 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -290,6 +290,8 @@ static int mov_metadata_hmmt(MOVContext *c, AVIOContext *pb, unsigned len) return 0; n_hmmt = avio_rb32(pb); + if (n_hmmt > len / 4) + return AVERROR_INVALIDDATA; for (i = 0; i < n_hmmt && !pb->eof_reached; i++) { int moment_time = avio_rb32(pb); avpriv_new_chapter(c->fc, i, av_make_q(1, 1000), moment_time, AV_NOPTS_VALUE, NULL); _______________________________________________ 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".
