Validate parameters to XML_GetInputContext

2017-04-25 18:32:34 +01:00 · 2017-04-25 18:32:34 +01:00 · 88731abd62
commit 88731abd62
parent fd2571b27a
1 changed files with 2 additions and 0 deletions
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@ -2045,6 +2045,8 @@ const char * XMLCALL
 XML_GetInputContext(XML_Parser parser, int *offset, int *size)
 {
 #ifdef XML_CONTEXT_BYTES
+  if (parser == NULL || offset == NULL || size == NULL)
+    return NULL;
  if (eventPtr && buffer) {
    *offset = (int)(eventPtr - buffer);
    *size   = (int)(bufferEnd - buffer);