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pcx: fix crash on invalid files

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This commit is contained in:
Albert Astals Cid 2024-07-23 00:22:08 +02:00
parent 638fdfcbdd
commit acd6b3970c
1 changed files with 2 additions and 1 deletions
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src/imageformats/pcx.cpp
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@ -375,7 +375,8 @@ static bool readImage4v2(QImage &img, QDataStream &s, const PCXHEADER &header)
return false; return false;
} }
for (unsigned int x = 0; x < header.BytesPerLine; ++x) { const unsigned int bpl = std::min(header.BytesPerLine, static_cast<quint16>(header.width() / 2));
for (unsigned int x = 0; x < bpl; ++x) {
p[x * 2] = (buf[x] & 240) >> 4; p[x * 2] = (buf[x] & 240) >> 4;
p[x * 2 + 1] = buf[x] & 15; p[x * 2 + 1] = buf[x] & 15;
} }