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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-12 17:11:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-11 21:23:48 +0200 |
| commit | 517b62a5a9737cc15c7daf079f84893cb7e09128 (patch) | |
| tree | 403ff0cfe75eeeceac05e8b0e29bf14df773ef3f | |
| parent | be635d2bfb31261ee251e917b71bbd7e00247564 (diff) | |
| download | ffmpeg-517b62a5a9737cc15c7daf079f84893cb7e09128.tar.gz | |
avcodec/aacdec_fixed: Limit index in vector_pow43()
Fixes: out of array access
Fixes: 26087/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_FIXED_fuzzer-5724825462767616
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 4f83a536384afda45acb6d7cdd22017c8c314f9e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/aacdec_fixed.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c index 16a8e9ce48..0c0f196fb1 100644 --- a/libavcodec/aacdec_fixed.c +++ b/libavcodec/aacdec_fixed.c @@ -155,9 +155,9 @@ static void vector_pow43(int *coefs, int len) for (i=0; i<len; i++) { coef = coefs[i]; if (coef < 0) - coef = -(int)ff_cbrt_tab_fixed[-coef]; + coef = -(int)ff_cbrt_tab_fixed[(-coef) & 8191]; else - coef = (int)ff_cbrt_tab_fixed[coef]; + coef = (int)ff_cbrt_tab_fixed[ coef & 8191]; coefs[i] = coef; } } |