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From:   Wei Yongjun <weiyongjun@huaweicloud.com>
To:     "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Gonglei <arei.gonglei@huawei.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        "David S. Miller" <davem@davemloft.net>,
        zhenwei pi <pizhenwei@bytedance.com>
Cc:     Wei Yongjun <weiyongjun1@huawei.com>,
        virtualization@lists.linux-foundation.org,
        linux-crypto@vger.kernel.org
Subject: [PATCH] virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()
Date:   Mon, 14 Nov 2022 11:07:40 +0000
Message-Id: <20221114110740.537276-1-weiyongjun@huaweicloud.com>
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From: Wei Yongjun <weiyongjun1@huawei.com>

'vc_ctrl_req' is alloced in virtio_crypto_alg_skcipher_close_session(),
and should be freed in the invalid ctrl_status->status error handling
case. Otherwise there is a memory leak.

Fixes: 0756ad15b1fe ("virtio-crypto: use private buffer for control request")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/crypto/virtio/virtio_crypto_skcipher_algs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c b/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
index e553ccadbcbc..e5876286828b 100644
--- a/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_skcipher_algs.c
@@ -239,7 +239,8 @@ static int virtio_crypto_alg_skcipher_close_session(
 		pr_err("virtio_crypto: Close session failed status: %u, session_id: 0x%llx\n",
 			ctrl_status->status, destroy_session->session_id);
 
-		return -EINVAL;
+		err = -EINVAL;
+		goto out;
 	}
 
 	err = 0;
-- 
2.34.1