lkml.org 
[lkml]   [2017]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header
On Wed, Sep 20, 2017 at 04:45:08PM +0200, Andrey Konovalov wrote:
> Hi!
>
> I've got the following crash while fuzzing the kernel with syzkaller.
>
> On commit ebb2c2437d8008d46796902ff390653822af6cc4 (Sep 18).
>
> It looks like cdc_parse_cdc_header() doesn't validate buflen before
> accessing buffer[1], buffer[2] and so on. The only check present is
> while (buflen > 0).

Ugh, you are right, let me go work on a patch, thanks for the report...

\
 
 \ /
  Last update: 2017-09-21 19:28    [W:0.063 / U:0.508 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site