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From http://ftp.gnu.org/pub/gnu/bash/bash-4.3-patches/bash43-041

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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>

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                 BASH PATCH REPORT

                 =================

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Bash-Release:   4.3

Patch-ID:   bash43-041

​

Bug-Reported-by:    Hanno Böck <hanno@hboeck.de>

Bug-Reference-ID:   <20150623131106.6f111da9@pc1>, <20150707004640.0e61d2f9@pc1>

Bug-Reference-URL:  http://lists.gnu.org/archive/html/bug-bash/2015-06/msg00089.html,

            http://lists.gnu.org/archive/html/bug-bash/2015-07/msg00018.html

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Bug-Description:

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There are several out-of-bounds read errors that occur when completing command

lines where assignment statements appear before the command name.  The first

two appear only when programmable completion is enabled; the last one only

happens when listing possible completions.

​

Patch (apply with `patch -p0'):

​

*** a/bash-4.3.40/bashline.c    2014-12-29 14:39:43.000000000 -0500

--- b/bashline.c    2015-08-12 10:21:58.000000000 -0400

***************

*** 1469,1476 ****

--- 1469,1489 ----

        os = start;

        n = 0;

+       was_assignment = 0;

        s = find_cmd_start (os);

        e = find_cmd_end (end);

        do

    {

+     /* Don't read past the end of rl_line_buffer */

+     if (s > rl_end)

+       {

+         s1 = s = e1;

+         break;

+       }

+     /* Or past point if point is within an assignment statement */

+     else if (was_assignment && s > rl_point)

+       {

+         s1 = s = e1;

+         break;

+       }

      /* Skip over assignment statements preceding a command name.  If we

         don't find a command name at all, we can perform command name

*** a/bash-4.3.40/lib/readline/complete.c   2013-10-14 09:27:10.000000000 -0400

--- b/lib/readline/complete.c   2015-07-31 09:34:39.000000000 -0400

***************

*** 690,693 ****

--- 690,695 ----

    if (temp == 0 || *temp == '\0')

      return (pathname);

+   else if (temp[1] == 0 && temp == pathname)

+     return (pathname);

    /* If the basename is NULL, we might have a pathname like '/usr/src/'.

       Look for a previous slash and, if one is found, return the portion

*** a/bash-4.3/patchlevel.h 2012-12-29 10:47:57.000000000 -0500

--- b/patchlevel.h  2014-03-20 20:01:28.000000000 -0400