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| author | Michael Niedermayer <michael@niedermayer.cc> | 2025-05-11 00:58:26 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2025-08-08 14:21:36 +0200 |
| commit | 01a1b99fc2ccdf713abfa5203e36fbf5816e1b5f (patch) | |
| tree | 2f9ec0d7c5a082752872ed4890d91fe27c6c045f | |
| parent | 069daca9e0057502cccc302ebfe00471817e68cf (diff) | |
| download | ffmpeg-01a1b99fc2ccdf713abfa5203e36fbf5816e1b5f.tar.gz | |
avcodec/aacsbr_template: Check ilb
Fixes: index 50 out of bounds for type 'INTFLOAT [40][2]'
Fixes: 401661737/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_LATM_fuzzer-4866055713652736
Someone knowing AAC well should review this, there is likely a nicer fix
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/aacsbr_template.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/aacsbr_template.c b/libavcodec/aacsbr_template.c index 72395c63dd..3c39da509d 100644 --- a/libavcodec/aacsbr_template.c +++ b/libavcodec/aacsbr_template.c @@ -1626,6 +1626,9 @@ static void sbr_env_estimate(AAC_FLOAT (*e_curr)[48], INTFLOAT X_high[64][40][2] int ilb = ch_data->t_env[e] * 2 + ENVELOPE_ADJUSTMENT_OFFSET; int iub = ch_data->t_env[e + 1] * 2 + ENVELOPE_ADJUSTMENT_OFFSET; + if (ilb >= 40) + return; + for (m = 0; m < sbr->m[1]; m++) { AAC_FLOAT sum = sbr->dsp.sum_square(X_high[m+kx1] + ilb, iub - ilb); #if USE_FIXED @@ -1644,6 +1647,9 @@ static void sbr_env_estimate(AAC_FLOAT (*e_curr)[48], INTFLOAT X_high[64][40][2] int iub = ch_data->t_env[e + 1] * 2 + ENVELOPE_ADJUSTMENT_OFFSET; const uint16_t *table = ch_data->bs_freq_res[e + 1] ? sbr->f_tablehigh : sbr->f_tablelow; + if (ilb >= 40) + return; + for (p = 0; p < sbr->n[ch_data->bs_freq_res[e + 1]]; p++) { #if USE_FIXED SoftFloat sum = FLOAT_0; |