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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-23 19:59:57 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-06 20:30:57 +0100 |
| commit | 6ef666f4a699e81f9cc956d01f2859a8ec40ab6e (patch) | |
| tree | 86699d18a8cda372a8b91741b377b558a42da29a | |
| parent | 6f4c963d6168525576ae58267c165acce7532353 (diff) | |
| download | ffmpeg-6ef666f4a699e81f9cc956d01f2859a8ec40ab6e.tar.gz | |
avcodec/cook: Enlarge gain table
Fixes: index 25 out of bounds for type 'float [23]'
Fixes: 18355/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_COOK_fuzzer-5641398941908992
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 50001cd440ac89ed125f0154dedbcfa2718d2d68)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/cook.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/cook.c b/libavcodec/cook.c index 673896d6cd..8e63a4312b 100644 --- a/libavcodec/cook.c +++ b/libavcodec/cook.c @@ -143,7 +143,7 @@ typedef struct cook { /* generatable tables and related variables */ int gain_size_factor; - float gain_table[23]; + float gain_table[31]; /* data buffers */ @@ -178,8 +178,8 @@ static av_cold void init_gain_table(COOKContext *q) { int i; q->gain_size_factor = q->samples_per_channel / 8; - for (i = 0; i < 23; i++) - q->gain_table[i] = pow(pow2tab[i + 52], + for (i = 0; i < 31; i++) + q->gain_table[i] = pow(pow2tab[i + 48], (1.0 / (double) q->gain_size_factor)); } @@ -663,7 +663,7 @@ static void interpolate_float(COOKContext *q, float *buffer, for (i = 0; i < q->gain_size_factor; i++) buffer[i] *= fc1; } else { // smooth gain - fc2 = q->gain_table[11 + (gain_index_next - gain_index)]; + fc2 = q->gain_table[15 + (gain_index_next - gain_index)]; for (i = 0; i < q->gain_size_factor; i++) { buffer[i] *= fc1; fc1 *= fc2; |