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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-03-25 22:47:26 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-06-14 16:46:28 +0200 |
| commit | 9274fb25324cc7676d3464b5248739166926c6a7 (patch) | |
| tree | 854ce3c0addb68ebfc63287e9eedbfd784af3883 | |
| parent | 9874baf2cd31c83cc32e213e5f1b6ad7bf5b4086 (diff) | |
| download | ffmpeg-9274fb25324cc7676d3464b5248739166926c6a7.tar.gz | |
avformat/mov: Non overflowing ambisonic order check
Fixes: signed integer overflow: 536870913 * 536870913 cannot be represented in type 'int'
Fixes: 45862/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-4730373768085504
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/mov.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/mov.c b/libavformat/mov.c index f8248ab65b..3ec0ea2361 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -7381,7 +7381,7 @@ static int mov_read_SA3D(MOVContext *c, AVIOContext *pb, MOVAtom atom) } channel_count = avio_rb32(pb); - if (channel_count != (ambisonic_order + 1) * (ambisonic_order + 1)) { + if (ambisonic_order < 0 || channel_count != (ambisonic_order + 1LL) * (ambisonic_order + 1LL)) { av_log(c->fc, AV_LOG_ERROR, "Invalid number of channels (%d / %d)\n", channel_count, ambisonic_order); |