diff options
Diffstat (limited to 'core/fpdfapi')
| -rw-r--r-- | core/fpdfapi/parser/cpdf_hint_tables.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_hint_tables.cpp b/core/fpdfapi/parser/cpdf_hint_tables.cpp index 24abf5dd13..6a84143f9e 100644 --- a/core/fpdfapi/parser/cpdf_hint_tables.cpp +++ b/core/fpdfapi/parser/cpdf_hint_tables.cpp @@ -290,6 +290,11 @@ bool CPDF_HintTables::ReadSharedObjHintTable(CFX_BitStream* hStream, // greatest and least length of a shared object group, in bytes. uint32_t dwDeltaGroupLen = hStream->GetBits(16); + // Trying to decode more than 32 bits isn't going to work when we write into + // a uint32_t. + if (dwDeltaGroupLen > 31) + return false; + if (dwFirstSharedObjNum >= CPDF_Parser::kMaxObjectNumber || m_nFirstPageSharedObjs >= CPDF_Parser::kMaxObjectNumber || dwSharedObjTotal >= CPDF_Parser::kMaxObjectNumber) { |