linux-kernel - Re: [PATCH] CIFS: Fix NULL pointer dereference in cifs_construct

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LNX.2.00.1202050037300.30244@swampdragon.chaosbits.net>
Date:	Sun, 5 Feb 2012 00:37:45 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	linux-cifs@...r.kernel.org
cc:	samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org,
	Steve French <sfrench@...ba.org>
Subject: Re: [PATCH] CIFS: Fix NULL pointer dereference in
 cifs_construct_tcon()

On Sun, 5 Feb 2012, Jesper Juhl wrote:

> If the call to kcalloc() fails and returns NULL we'll dereference a

s/kcalloc/kzalloc/

> NULL 'vol_info' after we jump to the 'out:' label.
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>
> ---
>  fs/cifs/connect.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 986709a..bd67b7c 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -3859,7 +3859,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
>  	vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL);
>  	if (vol_info == NULL) {
>  		tcon = ERR_PTR(-ENOMEM);
> -		goto out;
> +		goto out2;
>  	}
>  
>  	vol_info->local_nls = cifs_sb->local_nls;
> @@ -3901,7 +3901,7 @@ out:
>  	kfree(vol_info->username);
>  	kfree(vol_info->password);
>  	kfree(vol_info);
> -
> +out2:
>  	return tcon;
>  }
>  
> 

-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/