linux-kernel - Re: [PATCH] KEYS: trusted: Fix memory leak on object td

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Date:   Mon, 3 May 2021 17:53:48 +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>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-integrity@...r.kernel.org, keyrings@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        clang-built-linux@...glegroups.com
Subject: Re: [PATCH] KEYS: trusted: Fix memory leak on object td

On Fri, Apr 30, 2021 at 12:37:24PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Two error return paths are neglecting to free allocated object td,
> causing a memory leak. Fix this by returning via the error return
> path that securely kfree's td.
> 
> Fixes clang scan-build warning:
> security/keys/trusted-keys/trusted_tpm1.c:496:10: warning: Potential
> memory leak [unix.Malloc]
> 
> Fixes: 5df16caada3f ("KEYS: trusted: Fix incorrect handling of tpm_get_random()")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
 
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

/Jarkko