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Path: utzoo!linus!gatech!seismo!keith
From: keith@seismo.CSS.GOV (Keith Bostic)
Newsgroups: net.bugs.2bsd
Subject: CSS/Harvard 2.9BSD bug report #13
Message-ID: <736@seismo.CSS.GOV>
Date: Fri, 8-Nov-85 15:45:34 EST
Article-I.D.: seismo.736
Posted: Fri Nov  8 15:45:34 1985
Date-Received: Sat, 9-Nov-85 06:24:11 EST
Organization: Center for Seismic Studies, Arlington, VA
Lines: 20
Keywords: sys1.c, shell scripts, indir

Subject: Executable shell scripts can crash the system.

Index:	sys/sys1.c 2.9BSD

Description:
	Kernel doesn't check for more than one level of executable
	shell scripts.
Repeat-By:
	Execute "see" or any shell program that executes another shell
	script.
Fix:
	Apply the following diff.

sys1.c.right <<  >>  sys1.c.wrong
75,76c76,77
< 		goto bad;	/* check if script.  one level only */
< 	if (!indir && u.u_exdata.ux_shell[0] == '#' && u.u_exdata.ux_shell[1] == '!') {
---
> 		goto bad;	 /* check if script.  one level only */
> 	if (u.u_exdata.ux_shell[0] == '#' && u.u_exdata.ux_shell[1] == '!') {