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This bug was reported on the old mailing list: https://www.mail-archive.com/ast-developers@lists.research.att.com/msg00207.html A fork bomb can occur when SIGTSTP is sent to the vi editor. Vi must be launched from a script run with exec (tested with BusyBox vi, nvi and vim): $ cat /tmp/foo vi /tmp/bar echo end $ ksh $ chmod +x /tmp/foo $ exec /tmp/foo While in vi, send SIGTSTP using Ctrl-Z src/cmd/ksh93/sh/fault.c: - Only fork after Ctrl-Z if job control is available. The patch used checks 'job.jobcontrol' instead of 'SH_MONITOR': https://git.centos.org/rpms/ksh/blob/c8/f/SOURCES/ksh-20120801-forkbomb.patch |
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