diff options
| -rwxr-xr-x | media/libstagefright/MPEG4Extractor.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/media/libstagefright/MPEG4Extractor.cpp b/media/libstagefright/MPEG4Extractor.cpp index 26b07d4..0b07717 100755 --- a/media/libstagefright/MPEG4Extractor.cpp +++ b/media/libstagefright/MPEG4Extractor.cpp @@ -3587,8 +3587,17 @@ status_t MPEG4Source::parseSampleAuxiliaryInformationOffsets( int ivlength; CHECK(mFormat->findInt32(kKeyCryptoDefaultIVSize, &ivlength)); + // only 0, 8 and 16 byte initialization vectors are supported + if (ivlength != 0 && ivlength != 8 && ivlength != 16) { + ALOGW("unsupported IV length: %d", ivlength); + return ERROR_MALFORMED; + } // read CencSampleAuxiliaryDataFormats for (size_t i = 0; i < mCurrentSampleInfoCount; i++) { + if (i >= mCurrentSamples.size()) { + ALOGW("too few samples"); + break; + } Sample *smpl = &mCurrentSamples.editItemAt(i); memset(smpl->iv, 0, 16); |