[Bug 220485] security.bsd.stack_guard_page can be set to a negative integer value

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220485

            Bug ID: 220485
           Summary: security.bsd.stack_guard_page can be set to a negative
                    integer value
           Product: Base System
           Version: 11.0-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: shawn.webb at hardenedbsd.org

On FreeBSD 12-CURRENT and 11-STABLE, the security.bsd.stack_guard_page sysctl
node can be set to a negative integer value. Doing so will cause applications
to crash with SIGABRT.

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