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dds: Fix assert when reading broken data

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oss-fuzz testcase 6027629841154048
This commit is contained in:
Albert Astals Cid
2025-09-07 00:38:05 +02:00
parent 3bf2281610
commit eae41980b2
1 changed files with 5 additions and 1 deletions
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6
src/imageformats/dds.cpp
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@ -1126,7 +1126,11 @@ static QImage readR32F(QDataStream &s, const quint32 width, const quint32 height
for (quint32 y = 0; y < height; y++) { for (quint32 y = 0; y < height; y++) {
float *line = reinterpret_cast<float *>(image.scanLine(y)); float *line = reinterpret_cast<float *>(image.scanLine(y));
for (quint32 x = 0; x < width; x++) { for (quint32 x = 0; x < width; x++) {
line[x * 4] = readFloat32(s); const float f = readFloat32(s);
if (std::isnan(f)) {
return {};
}
line[x * 4] = f;
line[x * 4 + 1] = 0; line[x * 4 + 1] = 0;
line[x * 4 + 2] = 0; line[x * 4 + 2] = 0;
line[x * 4 + 3] = 1; line[x * 4 + 3] = 1;