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xcf: set buffer to 0 if read less data that expected

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Fixes MemorySanitizer: use-of-uninitialized-value on fuzzed file
This commit is contained in:
Albert Astals Cid 2019-01-28 20:09:21 +01:00
parent 3923c9b855
commit d6ae11a691
1 changed files with 5 additions and 1 deletions
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6
src/imageformats/xcf.cpp
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@ -540,7 +540,11 @@ bool XCFImageFormat::loadProperty(QDataStream &xcf_io, PropType &type, QByteArra
return false;
}
data = new char[size];
xcf_io.readRawData(data, size);
const quint32 dataRead = xcf_io.readRawData(data, size);
if (dataRead < size) {
// qDebug() << "XCF: loadProperty read less data than expected" << data_length << dataRead;
memset(&data[dataRead], 0, size - dataRead);
}
}
if (size != 0 && data) {