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18 lines
802 B
18 lines
802 B
diff --git a/src/network/access/http2/hpacktable.cpp b/src/network/access/http2/hpacktable.cpp
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index 0b69ee86a9..f20ec92d4c 100644
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--- a/src/network/access/http2/hpacktable.cpp
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+++ b/src/network/access/http2/hpacktable.cpp
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@@ -26,8 +26,10 @@ HeaderSize entry_size(QByteArrayView name, QByteArrayView value)
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// for counting the number of references to the name and value would have
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// 32 octets of overhead."
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- const unsigned sum = unsigned(name.size() + value.size());
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- if (std::numeric_limits<unsigned>::max() - 32 < sum)
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+ size_t sum;
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+ if (qAddOverflow(size_t(name.size()), size_t(value.size()), &sum))
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+ return HeaderSize();
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+ if (sum > (std::numeric_limits<unsigned>::max() - 32))
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return HeaderSize();
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return HeaderSize(true, quint32(sum + 32));
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}
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