[Bug 265463] sh crashes during fuzz testing

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 27 Jul 2022 05:15:45 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265463

            Bug ID: 265463
           Summary: sh crashes during fuzz testing
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: gorbanev.es@gmail.com

Created attachment 235501
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=235501&action=edit
screenshots, test files and gdb script to reproduce crashes

Hi!
We were doing some fuzzing using AFL for sh, and we found an interesting issue.
There is some crash that may be exploitable.
So input file attached with screenshots, test files and gdb script to reproduce
crashes

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