Apply by doing:
cd /usr/src
patch -p0 < 033_execsubr.patch
And then rebuild your kernel.
Index: sys/kern/exec_subr.c
===================================================================
RCS file: /cvs/src/sys/kern/exec_subr.c,v
retrieving revision 1.7
diff -u -r1.7 exec_subr.c
--- sys/kern/exec_subr.c 1999/11/05 01:18:01 1.7
+++ sys/kern/exec_subr.c 2000/11/06 18:57:27
@@ -1,4 +1,4 @@
-/* $OpenBSD: exec_subr.c,v 1.7 1999/11/05 01:18:01 mickey Exp $ */
+/* $OpenBSD: exec_subr.c,v 1.9 2000/11/06 16:19:52 art Exp $ */
/* $NetBSD: exec_subr.c,v 1.9 1994/12/04 03:10:42 mycroft Exp $ */
/*
@@ -154,12 +154,13 @@
* map the vnode in using uvm_map.
*/
- /* checks imported from uvm_mmap, needed? */
if (cmd->ev_len == 0)
return(0);
if (cmd->ev_offset & PAGE_MASK)
return(EINVAL);
if (cmd->ev_addr & PAGE_MASK)
+ return(EINVAL);
+ if (cmd->ev_len & PAGE_MASK)
return(EINVAL);
/*