diff -u libxml2-2.7.8.dfsg/parser.c libxml2-2.7.8.dfsg/parser.c
--- libxml2-2.7.8.dfsg/parser.c
+++ libxml2-2.7.8.dfsg/parser.c
@@ -2709,7 +2709,7 @@
 
 		buffer[nbchars++] = '&';
 		if (nbchars > buffer_size - i - XML_PARSER_BUFFER_SIZE) {
-		    growBuffer(buffer, XML_PARSER_BUFFER_SIZE);
+		    growBuffer(buffer, i + XML_PARSER_BUFFER_SIZE);
 		}
 		for (;i > 0;i--)
 		    buffer[nbchars++] = *cur++;
diff -u libxml2-2.7.8.dfsg/debian/changelog libxml2-2.7.8.dfsg/debian/changelog