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Date: Sun, 22 Sep 1996 18:46:43 -0400
From: Mikhail Teterin <mi@aldan.zipnet.net>
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Subject: bin/1666: consistent crash in /usr/bin/vi
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>Number:         1666
>Category:       bin
>Synopsis:       crash in vi, while reading multiple files
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Sep 22 15:50:01 PDT 1996
>Last-Modified:
>Originator:     Mikhail Teterin
>Organization:
>Release:        FreeBSD 2.1-STABLE i386
>Environment:

	Same bug exists in the August snapshot -- did not seem to change
	since 
		Version 1.34, Wed Aug 17 14:37:48 1994
		The CSRG, University of California, Berkeley.

>Description:

	The files I attempted to edit are as follows:
	-rw-------  1 mi    bin  262 Aug 14 22:10 /tmp/est.15658
	-rw-------  1 root  bin  100 Aug  9 22:12 /tmp/est.3042

	being a humble `mi' without root's privileges, I get a
	"permission denied" error from vi, when I attempt to use the
	`:n' command. My next stupid `:n' will crash vi with a seg-fault
	(I guess, list of files to be edited has ended with NULL, but the
	second file is still marked as not-looked-at or smth, because an
	attempt to read it failed).

>How-To-Repeat:

	cd /tmp
	touch q w
	chmod 600 q w
	su
	chown root w
	exit
	vi q w
	:n
	:n

>Fix:
	
	Avoid looking at files unreadable to you :)

>Audit-Trail:
>Unformatted: