linux-kernel - Re: [PATCH] security: keys: trusted: Fix memory leaks on allocated blob

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Message-ID: <20210727030557.q7jxepbxh5radvlw@kernel.org>
Date:   Tue, 27 Jul 2021 06:05:57 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Colin King <colin.king@...onical.com>
Cc:     James Bottomley <jejb@...ux.ibm.com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        David Howells <dhowells@...hat.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E . Hallyn" <serge@...lyn.com>,
        linux-integrity@...r.kernel.org, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] security: keys: trusted: Fix memory leaks on allocated
 blob

On Fri, Jul 23, 2021 at 06:21:21PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> There are several error return paths that don't kfree the allocated
> blob, leading to memory leaks. Ensure blob is initialized to null as
> some of the error return paths in function tpm2_key_decode do not
> change blob. Add an error return path to kfree blob and use this on
> the current leaky returns.
> 
> Addresses-Coverity: ("Resource leak")
> Fixes: f2219745250f ("security: keys: trusted: use ASN.1 TPM2 key format for the blobs")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
 
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

Probably makes sense (for me) to add also

Cc: stable@...r.kernel.org

?

/Jarkko