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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-15 20:41:31 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:53:29 +0200 |
| commit | 7b9e1a5fcf6ed6465ae7b772e2967c71b7778344 (patch) | |
| tree | af0d197c9bb2bc3fbb18f07e64a24f0ebf5abc71 | |
| parent | 3b6a33b6606ec572e895d86be7d2436c30fe0056 (diff) | |
| download | ffmpeg-7b9e1a5fcf6ed6465ae7b772e2967c71b7778344.tar.gz | |
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 <michael@niedermayer.cc>
(cherry picked from commit 1d277b92fa4c149d589e6828d4e18ad578406f1f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/mov.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index 5a1191a197..73c8ac952a 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -288,6 +288,8 @@ 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); |