Date: Mon, 03 Aug 2020 06:27:34 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 248444] /usr/sbin/jail crashes when parsing certain configuration files Message-ID: <bug-248444-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248444 Bug ID: 248444 Summary: /usr/sbin/jail crashes when parsing certain configuration files Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: ms-freebsd-bugzilla@stoffnet.at CC: ms-freebsd-bugzilla@stoffnet.at Some variable names may cause the configuration parser to crash. So far I could only reproduce this issue with "$interface". Example: Setting "$interface" in two jail configurations ("crash" and "nocrash"). Using any jail configuration but the last one ("nocrash") will crash the configuration parser. You could have any number of crashing jails ("crash1", "crash2", ...), but only one jail that does not crash (the bottom most one). jail.conf: persist; exec.prestart = "echo '\$interface = ${interface}'"; crash { $interface = "vr0"; } nocrash { $interface = "vr1"; } How to reproduce: # jail -f jail.conf -c crash Segmentation fault (core dumped) # jail -f crash.conf -c nocrash $interface = vr1 nocrash: created # jail -f crash.conf -r nocrash nocrash: removed -- You are receiving this mail because: You are the assignee for the bug.help
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