From: Yu Liao Date: Thu, 10 Nov 2022 09:03:29 +0000 (+0800) Subject: net/tls: Fix memory leak in tls_enc_skb() and tls_sw_fallback_init() X-Git-Tag: v6.1~120^2~27 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0834ced65a6a1eaa10d0b319b685879a671b29aa;p=platform%2Fkernel%2Flinux-starfive.git net/tls: Fix memory leak in tls_enc_skb() and tls_sw_fallback_init() 'aead_req' and 'aead_send' is allocated but not freed in default switch case. This commit fixes the potential memory leak by freeing them under the situation. Note that the default cases here should never be reached as they'd mean we allowed offloading an unsupported algorithm. Fixes: ea7a9d88ba21 ("net/tls: Use cipher sizes structs") Signed-off-by: Yu Liao Reviewed-by: Gal Pressman Link: https://lore.kernel.org/r/20221110090329.2036382-1-liaoyu15@huawei.com Signed-off-by: Jakub Kicinski --- diff --git a/net/tls/tls_device_fallback.c b/net/tls/tls_device_fallback.c index cdb391a..7fbb1d0 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 + @@ -492,7 +492,8 @@ int tls_sw_fallback_init(struct sock *sk, key = ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->key; break; default: - return -EINVAL; + rc = -EINVAL; + goto free_aead; } cipher_sz = &tls_cipher_size_desc[crypto_info->cipher_type];