diff options
| -rw-r--r-- | comphelper/source/misc/backupfilehelper.cxx | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/comphelper/source/misc/backupfilehelper.cxx b/comphelper/source/misc/backupfilehelper.cxx index 5421f1510ba4..464fbeb89048 100644 --- a/comphelper/source/misc/backupfilehelper.cxx +++ b/comphelper/source/misc/backupfilehelper.cxx @@ -154,7 +154,19 @@ namespace return false; } - std::vector< sal_Char > aTarget(nLength); + sal_uInt64 nPos; + if (osl::File::E_None != rFile->getPos(nPos)) + return false; + + sal_uInt64 nSize; + if (osl::File::E_None != rFile->getSize(nSize)) + return false; + + const auto nRemainingSize = nSize - nPos; + if (nLength > nRemainingSize) + return false; + + std::vector<sal_Char> aTarget(nLength); sal_uInt64 nBaseRead(0); // read rTarget |