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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-12 17:11:27 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:37:21 +0200 |
| commit | 92b8c0a8c102a25cc117b9853ced649c709c3a8d (patch) | |
| tree | b8f3983a5bb7dfa8b8257b298cfc707df8ff816d | |
| parent | 75ce842d7c3de47ffbe86b3c1f6c1cbc912daf14 (diff) | |
| download | ffmpeg-92b8c0a8c102a25cc117b9853ced649c709c3a8d.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 411d96d5a6..e0fe504b8e 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; } } |