Let's ignore the index table if the number of index entries does not match the index duration (or the special AVID index entry counts).
Fixes: OOM Fixes: 50551/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-6607795234930688 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Marton Balint <c...@passwd.hu> --- libavformat/mxfdec.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 2e61e77d67..0dc61648b1 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -1937,6 +1937,14 @@ static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_ta return 0; } + if (s->nb_index_entries != s->index_duration && + s->nb_index_entries != s->index_duration + 1 && + s->nb_index_entries != s->index_duration * 2 + 1) { + index_table->nb_ptses = 0; + av_log(mxf->fc, AV_LOG_ERROR, "ignoring IndexSID %d, duration does not match nb_index_entries\n", s->index_sid); + return 0; + } + index_table->nb_ptses += s->index_duration; } -- 2.35.3 _______________________________________________ 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".
