netdev - [PATCH] net/tls: Fix memory leak in tls_enc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20221110080131.1919453-1-liaoyu15@huawei.com>
Date:   Thu, 10 Nov 2022 16:01:31 +0800
From:   Yu Liao <liaoyu15@...wei.com>
To:     <borisp@...dia.com>, <john.fastabend@...il.com>, <kuba@...nel.org>,
        <gal@...dia.com>, <pabeni@...hat.com>, <edumazet@...gle.com>,
        <davem@...emloft.net>
CC:     <liaoyu15@...wei.com>, <liwei391@...wei.com>,
        <netdev@...r.kernel.org>
Subject: [PATCH] net/tls: Fix memory leak in tls_enc_skb()

'aead_req' is allocated in tls_alloc_aead_request(), but not freed
in switch case 'default'. This commit fixes the potential memory leak
by freeing 'aead_req' under the situation.

Fixes: ea7a9d88ba21 ("net/tls: Use cipher sizes structs")
Signed-off-by: Yu Liao <liaoyu15@...wei.com>
---
 net/tls/tls_device_fallback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/tls/tls_device_fallback.c b/net/tls/tls_device_fallback.c
index cdb391a8754b..efffceee129f 100644
--- a/net/tls/tls_device_fallback.c
+++ b/net/tls/tls_device_fallback.c
@@ -346,7 +346,7 @@ static struct sk_buff *tls_enc_skb(struct tls_context *tls_ctx,
 		salt = tls_ctx->crypto_send.aes_gcm_256.salt;
 		break;
 	default:
-		return NULL;
+		goto free_req;
 	}
 	cipher_sz = &tls_cipher_size_desc[tls_ctx->crypto_send.info.cipher_type];
 	buf_len = cipher_sz->salt + cipher_sz->iv + TLS_AAD_SPACE_SIZE +
-- 
2.25.1