GNU bug report logs - #17334
24.3; Crash in cmdproxy.exe

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#17334: closed (24.3; Crash in cmdproxy.exe)
Date: Sat, 26 Apr 2014 07:09:02 +0000

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Your message dated Sat, 26 Apr 2014 10:08:23 +0300
with message-id <831twkpnyw.fsf <at> gnu.org>
and subject line Re: bug#17334: 24.3; Crash in cmdproxy.exe
has caused the debbugs.gnu.org bug report #17334,
regarding 24.3; Crash in cmdproxy.exe
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Sohail Somani <sohail <at> taggedtype.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; Crash in cmdproxy.exe
Date: Wed, 23 Apr 2014 23:58:57 -0400

There is a "bug" in cmdproxy.exe which should never happen, but does
anyway. In make_absolute, there is the following code:

  strncpy(dir, path, p - path);
  dir[p - path] = '\0';

If p-path > sizeof(dir), a buffer overrun occurs.

I came across this problem because I accidentally used ':' as a
separator when constructing the PATH variable in Emacs.

Thanks,

Sohail

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Sohail Somani <sohail <at> taggedtype.net>
Cc: 17334-done <at> debbugs.gnu.org
Subject: Re: bug#17334: 24.3; Crash in cmdproxy.exe
Date: Sat, 26 Apr 2014 10:08:23 +0300

> Date: Wed, 23 Apr 2014 23:58:57 -0400
> From: Sohail Somani <sohail <at> taggedtype.net>
> 
> There is a "bug" in cmdproxy.exe which should never happen, but does
> anyway. In make_absolute, there is the following code:
> 
>    strncpy(dir, path, p - path);
>    dir[p - path] = '\0';
> 
> If p-path > sizeof(dir), a buffer overrun occurs.
> 
> I came across this problem because I accidentally used ':' as a
> separator when constructing the PATH variable in Emacs.

Thanks, this is now fixed for Emacs 24.4 (revision 117021 on the
emacs-24 branch).

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