lkml.org 
[lkml]   [2015]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] cosa.c : Array index 'i' is used before limits check.
Sergei Shtylyov wrote:
: Hello.
:
: On 02/24/2015 10:52 PM, Ameen Ali wrote:
:
: >avoid out-of-bounds-read by checking count before indexing.
:
: >Signed-off-by: Ameen Ali <Ameenali023@gmail.com>
: >---
: > drivers/net/wan/cosa.c | 2 +-
: > 1 file changed, 1 insertion(+), 1 deletion(-)
:
: >diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
: >index 83c39e2..5252e21 100644
: >--- a/drivers/net/wan/cosa.c
: >+++ b/drivers/net/wan/cosa.c
: >@@ -376,7 +376,7 @@ static int __init cosa_init(void)
: > }
: > for (i=0; i<MAX_CARDS; i++)
: > cosa_cards[i].num = -1;
: >- for (i=0; io[i] != 0 && i < MAX_CARDS; i++)
: >+ for (i=0; (i < MAX_CARDS) && (io[i] != 0) ; i++)
:
: Parens you've added aren't necessary.

Yes, but I am OK with both variants.

: I suggest to add spaces after and before = in the first expression.

In that case, also the upper for() cycle should be modified
to match this. I don't think this is necessary.

-Yenya

--
| Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> |
| New GPG 4096R/A45477D5 -- see http://www.fi.muni.cz/~kas/pgp-rollover.txt |
| http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ |
||| "New and improved" is only really improved if it also takes backwards |||
||| compatibility into account, rather than saying "now everybody must do |||
||| things the new and improved - and different - way" --Linus Torvalds |||




\
 
 \ /
  Last update: 2015-03-02 14:41    [W:0.486 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site