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-rw-r--r--core/fpdfapi/parser/cpdf_syntax_parser.cpp7
1 files changed, 3 insertions, 4 deletions
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.cpp b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
index 67c0977cfe..6ffd641aa8 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
@@ -724,11 +724,10 @@ std::unique_ptr<CPDF_Stream> CPDF_SyntaxParser::ReadStream(
}
m_Pos = streamStartPos;
}
- if (len < 0)
- return nullptr;
- // If the length is longer then the remaining buffer giveup.
- if (len > m_pFileAccess->GetSize() - m_pFileAccess->GetPosition())
+ // Read up to the end of the buffer.
+ std::min(len, m_FileLen - m_Pos - m_HeaderOffset);
+ if (len <= 0)
return nullptr;
std::unique_ptr<uint8_t, FxFreeDeleter> pData;