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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-29 22:26:43 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-07 00:00:46 +0300 |
| commit | e66d4725c7187d291edc9b1076585b1a48da907e (patch) | |
| tree | fc7fd822c77e83822fd29d1ed566c2a423bd9045 | |
| parent | 5a1e0cae2f78b10cc7ab6cd41d6908c4ae89276f (diff) | |
avcodec/qdm2: Check frame size
Fixes: index 2304 out of bounds for type 'float [2304]'
Fixes: 16332/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDM2_fuzzer-5679142481166336
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 12b909ba319d32ed100d9b26021aa9b6976424d7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/qdm2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c index eaffb36dcc..ac8ae8cbbb 100644 --- a/libavcodec/qdm2.c +++ b/libavcodec/qdm2.c @@ -1727,6 +1727,11 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx) s->sub_sampling = s->fft_order - 7; s->frequency_range = 255 / (1 << (2 - s->sub_sampling)); + if (s->frame_size * 4 >> s->sub_sampling > MPA_FRAME_SIZE) { + avpriv_request_sample(avctx, "large frames"); + return AVERROR_PATCHWELCOME; + } + switch ((s->sub_sampling * 2 + s->channels - 1)) { case 0: tmp = 40; break; case 1: tmp = 48; break; |