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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-09-12 22:05:24 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-09-19 00:43:22 +0200 |
| commit | 6be3786c828edfd60d810c98a42a43eeac4f050c (patch) | |
| tree | 2cc27125ba0ba5af42e9b1ecc3e99654d9d65085 | |
| parent | 5a96aa435af0d66bdec52ee115cf4dd971855fcd (diff) | |
| download | ffmpeg-6be3786c828edfd60d810c98a42a43eeac4f050c.tar.gz | |
avformat/mxfdec: Check timecode for overflow
Fixes: signed integer overflow: 9223372036840103968 + 538976288 cannot be represented in type 'long'
Fixes: 70604/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-4844090340999168
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mxfdec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 17a04e16f1..24f4ed1c33 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -2393,6 +2393,9 @@ static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_t physical_track->edit_rate, source_track->edit_rate); + if (av_sat_add64(start_position, mxf_tc->start_frame) != start_position + (uint64_t)mxf_tc->start_frame) + return AVERROR_INVALIDDATA; + if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) { mxf_add_timecode_metadata(&st->metadata, "timecode", &tc); return 0; |