Backpatch fix for buffer overrun in parsing refcursor parameters to

REL7_2_STABLE.

diff --git a/src/pl/plpgsql/src/gram.y b/src/pl/plpgsql/src/gram.y
index b3a86236e5ad50cebbd7d7209aa4a44bcea87f3d..725f12f1d32c7e91a167d7aa0ebb9d76579b13ed 100644 (file)
--- a/src/pl/plpgsql/src/gram.y
+++ b/src/pl/plpgsql/src/gram.y
@@ -4,7 +4,7 @@
  *                                               procedural language
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.29.2.1 2002/05/21 18:50:18 tgl Exp $
+ *       $Header: /cvsroot/pgsql/src/pl/plpgsql/src/gram.y,v 1.29.2.2 2005/01/27 01:52:34 neilc Exp $
  *
  *       This software is copyrighted by Jan Wieck - Hamburg.
  *
@@ -476,6 +476,10 @@ decl_cursor_arglist : decl_cursor_arg
                                        {
                                                int i = $1->nfields++;
 
+                                               /* Guard against overflowing the array on malicious input */
+                                               if (i >= 1024)
+                                                       yyerror("too many parameters specified for refcursor");
+
                                                $1->fieldnames[i] = $3->refname;
                                                $1->varnos[i] = $3->varno;