lkml.org 
[lkml]   [2016]   [Nov]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH net 2/2] r8152: rx descriptor check
Hayes Wang <hayeswang@realtek.com> :
> Francois Romieu [mailto:romieu@fr.zoreil.com]
> > Sent: Friday, November 11, 2016 8:13 PM
> [...]
> > Invalid packet size corrupted receive descriptors in Realtek's device
> > reminds of CVE-2009-4537.
>
> Do you mean that the driver would get a packet exceed the size
> which is set to RxMaxSize ?

If it was possible to get it wrong once, it should be possible to
get it wrong twice, especially if some part of the hardware design
is recycled. I don't mean anything else.

I won't speculate about some cache consistency issue or some badly
aborted dma transaction to explain the memory corruption.

--
Ueimor

\
 
 \ /
  Last update: 2016-11-15 02:21    [W:0.076 / U:0.296 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site