Handle odd-length "UTF16" strings.

If the length of the buffer is not even, then this would read a byte
of uninitialized data.  Fix the length check to avoid this.

diff --git a/lib/hivex.c b/lib/hivex.c
index b1f6ea6..71ea5c3 100644 (file)
--- a/lib/hivex.c
+++ b/lib/hivex.c
@@ -1384,7 +1384,7 @@ utf16_string_len_in_bytes_max (const char *str, size_t len)
 {
   size_t ret = 0;
 
-  while (len > 0 && (str[0] || str[1])) {
+  while (len >= 2 && (str[0] || str[1])) {
     str += 2;
     ret += 2;
     len -= 2;