Re: [patch] cifs: writing past end of struct in cifs_convert_address()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 1 Mar 2012 10:06:52 +0300
Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:

> "s6->sin6_scope_id" is an int bits but strict_strtoul() writes a long
> so this can corrupt memory on 64 bit systems.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> 
> diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
> index 73e47e8..cab99b5 100644
> --- a/fs/cifs/netmisc.c
> +++ b/fs/cifs/netmisc.c
> @@ -197,8 +197,7 @@ cifs_convert_address(struct sockaddr *dst, const char *src, int len)
>  		memcpy(scope_id, pct + 1, slen);
>  		scope_id[slen] = '\0';
>  
> -		rc = strict_strtoul(scope_id, 0,
> -					(unsigned long *)&s6->sin6_scope_id);
> +		rc = kstrtouint(scope_id, 0, &s6->sin6_scope_id);
>  		rc = (rc == 0) ? 1 : 0;
>  	}
>  


Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux