diff options
| -rw-r--r-- | src/cppbor_parse.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/cppbor_parse.cpp b/src/cppbor_parse.cpp index f5e8fcf..964a72d 100644 --- a/src/cppbor_parse.cpp +++ b/src/cppbor_parse.cpp @@ -96,7 +96,8 @@ std::tuple<const uint8_t*, ParseClient*> handleString(uint64_t length, const uin const uint8_t* valueBegin, const uint8_t* end, const std::string& errLabel, ParseClient* parseClient) { - if (end - valueBegin < static_cast<ssize_t>(length)) { + ssize_t signed_length = static_cast<ssize_t>(length); + if (end - valueBegin < signed_length || signed_length < 0) { parseClient->error(hdrBegin, insufficientLengthString(length, end - valueBegin, errLabel)); return {hdrBegin, nullptr /* end parsing */}; } |