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Date:      Thu, 18 Aug 2016 07:56:55 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 211958] Boot overflows when reading loader.conf
Message-ID:  <bug-211958-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211958

            Bug ID: 211958
           Summary: Boot overflows when reading loader.conf
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: ecturt@gmail.com

There are some overflows when reading loader.conf, for example if you add a
line like:

autoboot aaaaaaaaa...

It will overflow a 256 byte buffer here:

https://github.com/freebsd/freebsd/blob/af3e10e5a78d3af8cef6088748978c6c612=
757f0/sys/boot/common/boot.c#L132

https://github.com/freebsd/freebsd/blob/7fc7d2ed6e06340ab861cd094a78db87215=
ecff3/sys/boot/common/commands.c#L36

This sprintf pattern into command_errbuf seems to be repeated a lot, and sh=
ould
probably be replaced with slprintf.

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