linux-kernel - Re: [PATCH] trusted keys: Fix a memory leak in trusted

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Date:	Mon, 24 Jan 2011 11:00:41 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Jesper Juhl <jj@...osbits.net>
cc:	David Howells <dhowells@...hat.com>,
	David Safford <safford@...ibm.com>, keyrings@...ux-nfs.org,
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] trusted keys: Fix a memory leak in trusted_update().

On Sun, 23 Jan 2011, Jesper Juhl wrote:

> One failure path in security/keys/trusted_defined.c::trusted_update() does 
> not free 'new_p' while the others do. This patch makes sure we also free 
> it in the remaining path (if datablob_parse() returns different from 
> Opt_update).
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>

Applied to
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6#for-linus

with filename change fixups.


> ---
>  trusted_defined.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/security/keys/trusted_defined.c b/security/keys/trusted_defined.c
> index 2836c6d..bae582b 100644
> --- a/security/keys/trusted_defined.c
> +++ b/security/keys/trusted_defined.c
> @@ -1032,6 +1032,7 @@ static int trusted_update(struct key *key, const void *data, size_t datalen)
>  	ret = datablob_parse(datablob, new_p, new_o);
>  	if (ret != Opt_update) {
>  		ret = -EINVAL;
> +		kfree(new_p);
>  		goto out;
>  	}
>  	/* copy old key values, and reseal with new pcrs */
> 
> 
> -- 
> Jesper Juhl <jj@...osbits.net>            http://www.chaosbits.net/
> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
> Plain text mails only, please.
> 

-- 
James Morris
<jmorris@...ei.org>
--
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