Bash-5.1 Official Patch 14

[Chet Ramey]

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

Bash-Release:   5.1
Patch-ID:       bash51-014

Bug-Reported-by:        platon7pronko@gmail.com
Bug-Reference-ID:
Bug-Reference-URL:      https://savannah.gnu.org/patch/?10035

Bug-Description:

Bash may produce corrupted input if a multibyte character spans a 512-byte
boundary while reading the output of a command substitution.

Patch (apply with `patch -p0'):

*** ../bash-20210217/subst.c    2021-02-03 10:32:08.000000000 -0500
--- subst.c     2021-03-01 16:47:52.000000000 -0500
***************
*** 6243,6247 ****
          /* punt on the hard case for now */
          memset (&ps, '\0', sizeof (mbstate_t));
!         mblen = mbrtowc (&wc, bufp-1, bufn+1, &ps);
          if (MB_INVALIDCH (mblen) || mblen == 0 || mblen == 1)
            istring[istring_index++] = c;
--- 6243,6247 ----
          /* punt on the hard case for now */
          memset (&ps, '\0', sizeof (mbstate_t));
!         mblen = mbrtowc (&wc, bufp-1, bufn, &ps);
          if (MB_INVALIDCH (mblen) || mblen == 0 || mblen == 1)
            istring[istring_index++] = c;

*** ../bash-5.1/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 13
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 14
  
  #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/