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Re: Minor patch to correct buffer overrun
From: |
Chris Sutcliffe |
Subject: |
Re: Minor patch to correct buffer overrun |
Date: |
Wed, 18 Aug 2010 09:21:14 -0400 |
Hi All,
I spent more time looking at the code as opposed to trying to figure
out GDB and I've fixed the issue. The problem was the memcpy to clear
the trailing slash for win32 in find_directory. Here's an updated
patch:
--- dir.c.orig 2010-08-18 09:12:02 -0400
+++ dir.c 2010-08-18 09:12:23 -0400
@@ -464,7 +464,7 @@
/* Remove any trailing slashes. Windows32 stat fails even on
valid directories if they end in a slash. */
- memcpy (tem, name, p - name + 1);
+ strncpy(tem, name, MAXPATHLEN);
tstart = tem;
if (tstart[1] == ':')
tstart += 2;
instead of relying on 'p' to determine the amount of memory to copy, I
went the safer route and use strncpy to copy the path being evaluated
to tem and make sure that we don't exceed tem's memory allocation
(which is defined as 'char tem[MAXPATHLEN]').
I'll roll out a new mingw32-make binary and source once I've heard
back that this patch is acceptable.
Thank you,
Chris
--
Chris Sutcliffe
http://emergedesktop.org
http://www.google.com/profiles/ir0nh34d
- Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/16
- Re: Minor patch to correct buffer overrun, Paul Smith, 2010/08/16
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/16
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/18
- Re: Minor patch to correct buffer overrun,
Chris Sutcliffe <=
- Re: Minor patch to correct buffer overrun, Eli Zaretskii, 2010/08/18
- Re: Minor patch to correct buffer overrun, Paul Smith, 2010/08/18
- Re: Minor patch to correct buffer overrun, Eli Zaretskii, 2010/08/18
- Re: Minor patch to correct buffer overrun, Eli Zaretskii, 2010/08/18
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/18
- Re: Minor patch to correct buffer overrun, Eli Zaretskii, 2010/08/18
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/18
- Re: Minor patch to correct buffer overrun, Eli Zaretskii, 2010/08/19
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/19
- Re: Minor patch to correct buffer overrun, Chris Sutcliffe, 2010/08/19