linux-kernel - Re: [PATCH] crypto: fix a memory leak in sm2

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Message-ID: <YLTuML8P8fXCl7iw@kroah.com>
Date:   Mon, 31 May 2021 16:09:52 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Hongbo Li <herbert.tencent@...il.com>
Cc:     keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        herbert@...dor.apana.org.au, ebiggers@...nel.org,
        dhowells@...hat.com, jarkko@...nel.org,
        tianjia.zhang@...ux.alibaba.com, herberthbli@...cent.com,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] crypto: fix a memory leak in sm2

On Mon, May 31, 2021 at 09:26:51PM +0800, Hongbo Li wrote:
> From: Hongbo Li <herberthbli@...cent.com>
> 
> SM2 module alloc ec->Q in sm2_set_pub_key(), when doing alg test in
> test_akcipher_one(), it will set public key for every test vector,
> and don't free ec->Q. This will cause a memory leak.
> 
> This patch alloc ec->Q in sm2_ec_ctx_init().
> 
> Fixes: ea7ecb66440b ("crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm")
> Signed-off-by: Hongbo Li <herberthbli@...cent.com>
> Reviewed-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
> ---
>  crypto/sm2.c | 24 ++++++++++--------------
>  1 file changed, 10 insertions(+), 14 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>