[Pkg-samba-maint] Bug#603631: smbfs: smbmount renders system when logged on with unprivileged user. Even reboot is not possible

[Steve Langasek]

reassign 603631 linux-2.6
severity 603631 important
thanks

On Mon, Nov 15, 2010 at 05:17:13PM +0100, christianha wrote:
> Package: smbfs
> Version: 2:3.2.5-4lenny13
> Severity: critical
> Tags: security
> Justification: breaks unrelated software

> 1.	sudo apt-get install smbfs
> 2.	sudo /usr/sbin/adduser nagios
> 3.	sudo /usr/sbin/usermod -a -G nagios nagios
> 4.	while true; do mkdir -p /tmp/mnt_10.0.0.2/test$ && smbmount //10.0.0.2/test$ /tmp/mnt_10.0.0.2/test$ -o password=asdfasdf,uid=nagios,gid=nagios,ro >> /dev/null& done
> 5.	wait approximately 10 seconds
> 6.	Strg+C
> 7.	ps aux (You will see lots of processes called /sbin/mount.cifs.)
> 8.	you can.t reboot system

This last indicates a kernel problem, not a problem in the smbfs package.

> Solution is to install linux-image-amd64 (>=2.6.32+25) from deb
> http://www.backports.org/debian lenny-backports main contrib non-free

And this confirms it.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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