Package: ksh
Version: 2020.0.0+really93u+20120801-8
Severity: normal
File: /bin/ksh93
X-Debbugs-Cc: t...@mirbsd.de

First reported by CrystalMath <~coderain@reactos/developer/theflash>
in IRC:

ksh93 -c 'kill %-4' segfaults (confirmed by me on sid)

03:18⎜«CrystalMath:#ksh» hi all, i may have found a bug
03:19⎜«CrystalMath:#ksh» ksh93 in debian crashes when you refer to a 
non-existent job
03:19⎜«CrystalMath:#ksh» like kill %5
03:19⎜«CrystalMath:#ksh» there's a Memory fault
03:19⎜«CrystalMath:#ksh» kill %-4 works too
03:28⎜«CrystalMath:#ksh» found the bug
03:28⎜«CrystalMath:#ksh» the pointer pw is accessed before it's checked for NULL
03:30⎜«CrystalMath:#ksh» in src/cmd/ksh93/sh/jobs.c

The reporter’s frustration with quilt ended up making them decide
to not report this to Debian themselves, forwarding thus.

This probably also affects at least stable.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'oldstable-updates'), (500, 
'buildd-unstable'), (500, 'unstable'), (500, 'oldstable'), (1, 
'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.8.0-2-amd64 (SMP w/2 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)

Versions of packages ksh depends on:
ii  libc6  2.31-4

ksh recommends no packages.

Versions of packages ksh suggests:
ii  binfmt-support  2.2.1-1

-- no debconf information

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