Messages in this thread | | | Date | Fri, 22 Jun 2007 17:49:41 +0530 | From | "Satyam Sharma" <> | Subject | Re: [BUG?]Set XIP mount option on ext2 bypass check. |
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Hi,
On 6/22/07, Arnd Bergmann <arnd@arndb.de> wrote: > On Thursday 21 June 2007, Carsten Otte wrote: > > > > This is an updated version of my bugfix patch. Yan Zheng pointed out, > > that ext2_remount lacks checking if -o xip should be enabled or not. > > This patch checks for presence of direct_access on the backing block > > device and if the blocksize meets the requirements. > > Andrew, please consider adding this patch to -mm. > > > > Signed-off-by: Carsten Otte <cotte@de.ibm.com> > > It looks to me like a local denial of service attack in case of > user-mountable ext2 file systems in /etc/fstab. > > Shouldn't that make it go into 2.6.22?
I agree. I would go on to suggest that all trivially-triggered oopsen / panics from userspace (even if they require privileges, such as the cat /dev/snapshot == oops issue posted last week) in fact ought to be CVE's, and the corresponding fixes for such issues be considered as candidates for -stable, if applicable to the current stable kernel.
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