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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-18 22:58:12 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-19 22:37:30 +0100 |
| commit | 9fc73bf022eb781eea7f685e2d2e9de4ba8898ca (patch) | |
| tree | 35faee19a32b6c833b36891435e5014898dc5055 | |
| parent | bb01baae269cd2d7a0e61dc9bf327168edd43b04 (diff) | |
| download | ffmpeg-9fc73bf022eb781eea7f685e2d2e9de4ba8898ca.tar.gz | |
avcodec/qdm2: Check fft_coefs_index
Fixes: out of array access
Fixes: 20660/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDM2_fuzzer-5658290216501248
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/qdm2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c index 7b9d50b234..657b2da64d 100644 --- a/libavcodec/qdm2.c +++ b/libavcodec/qdm2.c @@ -1334,6 +1334,9 @@ static void qdm2_fft_decode_tones(QDM2Context *q, int duration, if (q->frequency_range > (local_int_14 + 1)) { int sub_packet = (local_int_20 + local_int_28); + if (q->fft_coefs_index + stereo >= FF_ARRAY_ELEMS(q->fft_coefs)) + return; + qdm2_fft_init_coefficient(q, sub_packet, offset, duration, channel, exp, phase); if (stereo) |