Messages in this thread | | | From | "Yang, Bo" <> | Date | Thu, 3 Dec 2009 08:01:16 -0700 | Subject | RE: [PATCH] [SCSI] megaraid_sas: remove sysfs dbg_lvl world writeable permissions |
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How do you turn on poll_mode_io?
Thanks,
Bo Yang
________________________________________ From: Eugene Teo [eteo@redhat.com] Sent: Wednesday, December 02, 2009 7:08 PM To: Casey Dahlin Cc: linux-kernel@vger.kernel.org; Bryn M. Reeves; DL-MegaRAID Linux; James E.J. Bottomley; Andrew Morton; Yang Hongyang; Anand Gadiyar; Jiri Kosina; linux-scsi@vger.kernel.org Subject: Re: [PATCH] [SCSI] megaraid_sas: remove sysfs dbg_lvl world writeable permissions
On 12/02/2009 11:17 PM, Casey Dahlin wrote: > From: Bryn M. Reeves<bmr@redhat.com> > > /sys/bus/pci/drivers/megaraid_sas/poll_mode_io defaults to being > world-writable, which seems bad (letting any user affect kernel driver > behavior). > > This turns off group and user write permissions, so that on typical > production systems only root can write to it. > > Signed-off-by: Bryn M. Reeves<bmr@redhat.com> > Signed-off-by: Casey Dahlin<cdahlin@redhat.com>
CC: Eugene Teo <eteo@redhat.com>
The subject should read: megaraid_sas: remove poll_mode_io world writeable permissions instead, and this has been assigned with CVE-2009-3939.
Thanks, Eugene -- Eugene Teo / Red Hat Security Response Team
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