Bash-5.2 patch 13

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release:   5.2
Patch-ID:       bash52-013

Bug-Reported-by:        Ralf Oehler <Ralf@Oehler-Privat.de>
Bug-Reference-ID:       <20221120140252.2fc6489b@bilbo>
Bug-Reference-URL:      
https://lists.gnu.org/archive/html/bug-bash/2022-11/msg00082.html

Bug-Description:

Bash can leak memory when referencing a non-existent associative array
element.

Patch (apply with `patch -p0'):

*** ../bash-5.2-patched/subst.c 2022-11-05 17:27:48.000000000 -0400
--- subst.c     2022-11-21 14:42:59.000000000 -0500
***************
*** 7498,7503 ****
                    : quote_escapes (temp);
          rflags |= W_ARRAYIND;
-         if (estatep)
-           *estatep = es;      /* structure copy */
        }
        /* Note that array[*] and array[@] expanded to a quoted null string by
--- 7508,7511 ----
***************
*** 7508,7512 ****
        rflags |= W_HASQUOTEDNULL;
  
!       if (estatep == 0)
        flush_eltstate (&es);
      }
--- 7516,7522 ----
        rflags |= W_HASQUOTEDNULL;
  
!       if (estatep)
!       *estatep = es;  /* structure copy */
!       else
        flush_eltstate (&es);
      }
*** ../bash-5.2/patchlevel.h    2020-06-22 14:51:03.000000000 -0400
--- patchlevel.h        2020-10-01 11:01:28.000000000 -0400
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 12
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 13
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/