[SSSD] [PATCH] Fix segfault in AD Subdomains Module

Jakub Hrozek jhrozek at redhat.com
Wed May 15 09:19:12 UTC 2013


On Wed, May 15, 2013 at 10:17:02AM +0200, Lukas Slebodnik wrote:
> ehlo,
> 
> In function ad_subdomains_get_netlogon_done:
> If variable "reply_count" is zero then variable "reply" will not be
> initialized. Therefore we should not continue.
> 
> I am not sure about return code.
> 
> Patch is attached.
> 
> LS

> From b15e1a6b664201493ec0288a9c8e4ec5b2983dbc Mon Sep 17 00:00:00 2001
> From: Lukas Slebodnik <lslebodn at redhat.com>
> Date: Wed, 15 May 2013 10:09:08 +0200
> Subject: [PATCH] Fix segfault in AD Subdomains Module
> 
> In function ad_subdomains_get_netlogon_done:
> If variable "reply_count" is zero then variable "reply" will not be
> initialized. Therefore we should not continue.
> ---
>  src/providers/ad/ad_subdomains.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/src/providers/ad/ad_subdomains.c b/src/providers/ad/ad_subdomains.c
> index 1da343f8711b2b99a7afff6a4a398a1aa515a875..826ec9304ba7974bd857c02203026d9551699fc7 100644
> --- a/src/providers/ad/ad_subdomains.c
> +++ b/src/providers/ad/ad_subdomains.c
> @@ -307,6 +307,8 @@ static void ad_subdomains_get_netlogon_done(struct tevent_req *req)
>  
>      if (reply_count == 0) {
>          DEBUG(SSSDBG_TRACE_FUNC, ("No netlogon data available.\n"));
> +        ret = EINVAL;

Nice catch, but wouldn't ENOENT be a better error code here?

> +        goto done;
>      } else if (reply_count > 1) {
>          DEBUG(SSSDBG_OP_FAILURE,
>                ("More than one netlogon info returned.\n"));
> -- 
> 1.8.1.4
> 

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