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BASH PATCH REPORT
=================
Bash-Release: 4.0
Patch-ID: bash40-040
Bug-Reported-by: Tavis Ormandy <taviso () cmpxchg8b com>
Bug-Reference-ID:
Bug-Reference-URL: http://twitter.com/taviso/statuses/514887394294652929
Bug-Description:
Under certain circumstances, bash can incorrectly save a lookahead character and
return it on a subsequent call, even when reading a new line.
Patch (apply with `patch -p0'):
*** ../bash-4.0.39/parse.y 2009-06-02 09:08:07.000000000 -0400
--- parse.y 2014-09-25 16:15:47.000000000 -0400
***************
*** 2671,2674 ****
--- 2671,2676 ----
word_desc_to_read = (WORD_DESC *)NULL;
+ eol_ungetc_lookahead = 0;
+
current_token = '\n'; /* XXX */
last_read_token = '\n';
*** ../bash-4.0.39/y.tab.c 2009-01-08 09:30:24.000000000 -0500
--- y.tab.c 2014-09-25 20:27:08.000000000 -0400
***************
*** 4927,4930 ****
--- 4927,4932 ----
word_desc_to_read = (WORD_DESC *)NULL;
+ eol_ungetc_lookahead = 0;
+
last_read_token = '\n';
token_to_read = '\n';
***************
*** 7910,7912 ****
}
#endif /* HANDLE_MULTIBYTE */
-
--- 7912,7913 ----
*** ../bash-4.0/patchlevel.h 2009-01-04 14:32:40.000000000 -0500
--- patchlevel.h 2009-02-22 16:11:31.000000000 -0500
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 39
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 40
#endif /* _PATCHLEVEL_H_ */
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