lkml.org 
[lkml]   [2015]   [Jul]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [1/2] cxl: Fix off by one error allowing subsequent mmap page to be accessed
Date
On Tue, 2015-07-07 at 05:45:45 UTC, Ian Munsie wrote:
> From: Ian Munsie <imunsie@au1.ibm.com>
>
> It was discovered that if a process mmaped their problem state area they
> were able to access one page more than expected, potentially allowing
> them to access the problem state area of an unrelated process.
>
> This was due to a simple off by one error in the mmap fault handler
> introduced in 0712dc7e73e59d79bcead5d5520acf4e9e917e87 ("cxl: Fix issues
> when unmapping contexts"), which is fixed in this patch.
>
> Cc: stable@vger.kernel.org
> Fixes: 0712dc7e73e5 ("cxl: Fix issues when unmapping contexts")
> Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/cgit/linux/kernel/git/powerpc/linux.git/commit/?h=fixes&id=10a5894f2dedd8a26b3132497445b314c0d952c4

cheers


\
 
 \ /
  Last update: 2015-07-08 13:21    [W:0.058 / U:0.336 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site