bash: Fix for CVE-2014-7186 and CVE-2014-7187

This is a followup patch to incomplete CVE-2014-6271 fix code execution via
specially-crafted environment

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7186
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7187

(From OE-Core rev: 153d1125659df9e5c09e35a58bd51be184cb13c1)

Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/bash/bash-3.2.48/cve-2014-7186_cve-2014-7187.patch

@@ -0,0 +1,99 @@
+bash: Fix for CVE-2014-7186 and CVE-2014-7187
+
+Upstream-Status: Backport {GNU Patch-ID: bash32-055}
+
+Downloaded from: http://ftp.gnu.org/gnu/bash/bash-3.2-patches/bash32-055 
+
+Author: Chet Ramey <chet.ramey@case.edu>
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release: 3.2
+Patch-ID: bash32-055
+
+Bug-Reported-by:	Florian Weimer <fweimer@redhat.com>
+Bug-Reference-ID:
+Bug-Reference-URL:
+
+Bug-Description:
+
+There are two local buffer overflows in parse.y that can cause the shell
+to dump core when given many here-documents attached to a single command
+or many nested loops.
+---
+--- a/parse.y	2014-09-27 12:17:16.000000000 -0400
++++ b/parse.y	2014-09-30 19:43:22.000000000 -0400
+@@ -166,4 +166,7 @@
+ static int reserved_word_acceptable __P((int));
+ static int yylex __P((void));
++
++static void push_heredoc __P((REDIRECT *));
++static char *mk_alexpansion __P((char *));
+ static int alias_expand_token __P((char *));
+ static int time_command_acceptable __P((void));
+@@ -254,5 +257,7 @@
+ /* Variables to manage the task of reading here documents, because we need to
+    defer the reading until after a complete command has been collected. */
+-static REDIRECT *redir_stack[10];
++#define HEREDOC_MAX 16
++
++static REDIRECT *redir_stack[HEREDOC_MAX];
+ int need_here_doc;
+ 
+@@ -280,5 +285,5 @@
+    index is decremented after a case, select, or for command is parsed. */
+ #define MAX_CASE_NEST	128
+-static int word_lineno[MAX_CASE_NEST];
++static int word_lineno[MAX_CASE_NEST+1];
+ static int word_top = -1;
+ 
+@@ -425,5 +430,5 @@
+ 			  redir.filename = $2;
+ 			  $$ = make_redirection (0, r_reading_until, redir);
+-			  redir_stack[need_here_doc++] = $$;
++			  push_heredoc ($$);
+ 			}
+ 	|	NUMBER LESS_LESS WORD
+@@ -431,5 +436,5 @@
+ 			  redir.filename = $3;
+ 			  $$ = make_redirection ($1, r_reading_until, redir);
+-			  redir_stack[need_here_doc++] = $$;
++			  push_heredoc ($$);
+ 			}
+ 	|	LESS_LESS_LESS WORD
+@@ -488,5 +493,5 @@
+ 			  $$ = make_redirection
+ 			    (0, r_deblank_reading_until, redir);
+-			  redir_stack[need_here_doc++] = $$;
++			  push_heredoc ($$);
+ 			}
+ 	|	NUMBER LESS_LESS_MINUS WORD
+@@ -495,5 +500,5 @@
+ 			  $$ = make_redirection
+ 			    ($1, r_deblank_reading_until, redir);
+-			  redir_stack[need_here_doc++] = $$;
++			  push_heredoc ($$);
+ 			}
+ 	|	GREATER_AND '-'
+@@ -2214,4 +2219,19 @@
+ static int esacs_needed_count;
+ 
++static void
++push_heredoc (r)
++     REDIRECT *r;
++{
++  if (need_here_doc >= HEREDOC_MAX)
++    {
++      last_command_exit_value = EX_BADUSAGE;
++      need_here_doc = 0;
++      report_syntax_error (_("maximum here-document count exceeded"));
++      reset_parser ();
++      exit_shell (last_command_exit_value);
++    }
++  redir_stack[need_here_doc++] = r;
++}
++
+ void
+ gather_here_documents ()

meta/recipes-extended/bash/bash_3.2.48.bb

@@ -15,6 +15,7 @@ SRC_URI = "${GNU_MIRROR}/bash/bash-${PV}.tar.gz;name=tarball \
            file://cve-2014-6271.patch;striplevel=0 \
            file://cve-2014-7169.patch \
            file://Fix-for-bash-exported-function-namespace-change.patch \
+           file://cve-2014-7186_cve-2014-7187.patch \
            file://run-ptest \
           "
 

meta/recipes-extended/bash/bash_4.3.bb

@@ -12,6 +12,7 @@ SRC_URI = "${GNU_MIRROR}/bash/${BPN}-${PV}.tar.gz;name=tarball \
            file://cve-2014-6271.patch;striplevel=0 \
            file://cve-2014-7169.patch \
            file://Fix-for-bash-exported-function-namespace-change.patch \
+           file://cve-2014-7186_cve-2014-7187.patch \
            file://run-ptest \
            "