Messages in this thread |  | | | Date | Thu, 28 Jan 1999 18:45:03 +0100 (CET) | | From | Rik van Riel <> | | Subject | Re: [PATCH] msr v3 available |
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On Thu, 28 Jan 1999, Albert D. Cahalan wrote: > Richard Gooch writes: > > > Hi, all. Version 3 of my msr patch is now available from: > ... > > - Included patch which adds an ioctl() on /proc/<pid>/mem for > > translating virtual to physical addresses > > As you've been told before, this is a security hole.
> This gets very serious when Linux allows a limited number of > locked pages for each normal user.
The obvious fix is to only make this information available to root, or install a sysctl switch where you can choose whether your users have the capability or not.
The facility itself is important enough to not implement. Page colouring _does_ make a difference so we need to work on that for 2.3. In order to do that, we will need this measuring tool...
Rik -- If a Microsoft product fails, who do you sue? +-------------------------------------------------------------------+ | Linux Memory Management site: http://humbolt.geo.uu.nl/Linux-MM/ | | Nederlandse Linux documentatie: http://www.nl.linux.org/ | +-------------------------------------------------------------------+
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