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Avoid index-out-of-bounds in prepareDrcGain

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Fixes: 16962/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LIBFDK_AAC_fuzzer-5708503842291712

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
This commit is contained in:
Martin Storsjo 2019-09-06 22:42:07 +03:00
parent cc5c85dd70
commit 5ab5496af9
1 changed files with 1 additions and 0 deletions
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libDRCdec/src/drcGainDec_preprocess.cpp
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@ -676,6 +676,7 @@ prepareDrcGain(HANDLE_DRC_GAIN_DECODER hGainDec,
nDrcBands = pActiveDrc->bandCountForChannelGroup[g]; nDrcBands = pActiveDrc->bandCountForChannelGroup[g];
for (b = 0; b < nDrcBands; b++) { for (b = 0; b < nDrcBands; b++) {
DRC_ERROR err = DE_OK; DRC_ERROR err = DE_OK;
if (gainSetIndex >= 12) return DE_PARAM_OUT_OF_RANGE;
GAIN_SET* pGainSet = &(pCoef->gainSet[gainSetIndex]); GAIN_SET* pGainSet = &(pCoef->gainSet[gainSetIndex]);
int seq = pGainSet->gainSequenceIndex[b]; int seq = pGainSet->gainSequenceIndex[b];
DRC_CHARACTERISTIC* pDChar = &(pGainSet->drcCharacteristic[b]); DRC_CHARACTERISTIC* pDChar = &(pGainSet->drcCharacteristic[b]);