[lkml]   [2004]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: PATCH: cdrecord: avoiding scsi device numbering for ide devices
On Sat, 21 Aug 2004 14:50:08 +0200, you wrote in linux.kernel:

> If the owners and permissions of the filesystem have been set up correctly,
> then there is no security problem.

The previous Linux implementation allowed users with *read* access
to the device to send arbitrary SG_IO commands. Giving read permission
to normal users is quite common, to allow them to run isosize or play
their freshly burned SVCDs with mplayer.

It violated the principle of least surprise that a user can screw
the device without even having write permission.

Yes, it breaks user-space programs, and yes, the kernel is to blame
for its previous behavior, not user-space. However, now we need to
get on, and going back to the previous behavior, which because
the discussion is now a well-known security hole, is not an option.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:05    [W:0.133 / U:5.936 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site