From a1dfa6812b682eef750412dd5a90e7d38d7af068 Mon Sep 17 00:00:00 2001 From: Boris Pismenny Date: Wed, 14 Feb 2018 10:46:06 +0200 Subject: tls: retrun the correct IV in getsockopt Current code returns four bytes of salt followed by four bytes of IV. This patch returns all eight bytes of IV. fixes: 3c4d7559159b ("tls: kernel TLS support") Signed-off-by: Boris Pismenny Signed-off-by: David S. Miller --- net/tls/tls_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/tls/tls_main.c') diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index b0d5fcea47e7..a6c3702e0ddb 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -308,7 +308,8 @@ static int do_tls_getsockopt_tx(struct sock *sk, char __user *optval, goto out; } lock_sock(sk); - memcpy(crypto_info_aes_gcm_128->iv, ctx->iv, + memcpy(crypto_info_aes_gcm_128->iv, + ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, TLS_CIPHER_AES_GCM_128_IV_SIZE); release_sock(sk); if (copy_to_user(optval, -- cgit From 257082e6ae23e92898440f6bcb2857555bf7957c Mon Sep 17 00:00:00 2001 From: Boris Pismenny Date: Wed, 14 Feb 2018 10:46:07 +0200 Subject: tls: reset the crypto info if copy_from_user fails copy_from_user could copy some partial information, as a result TLS_CRYPTO_INFO_READY(crypto_info) could be true while crypto_info is using uninitialzed data. This patch resets crypto_info when copy_from_user fails. fixes: 3c4d7559159b ("tls: kernel TLS support") Signed-off-by: Boris Pismenny Signed-off-by: David S. Miller --- net/tls/tls_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/tls/tls_main.c') diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index a6c3702e0ddb..c105f86a7ea6 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -376,7 +376,7 @@ static int do_tls_setsockopt_tx(struct sock *sk, char __user *optval, rc = copy_from_user(crypto_info, optval, sizeof(*crypto_info)); if (rc) { rc = -EFAULT; - goto out; + goto err_crypto_info; } /* check version */ -- cgit From c410c1966fe6fcfb23bcac0924aaa6a6e7449829 Mon Sep 17 00:00:00 2001 From: Boris Pismenny Date: Wed, 14 Feb 2018 10:46:08 +0200 Subject: tls: getsockopt return record sequence number Return the TLS record sequence number in getsockopt. Signed-off-by: Boris Pismenny Signed-off-by: David S. Miller --- net/tls/tls_main.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/tls/tls_main.c') diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c index c105f86a7ea6..e9b4b53ab53e 100644 --- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -311,6 +311,8 @@ static int do_tls_getsockopt_tx(struct sock *sk, char __user *optval, memcpy(crypto_info_aes_gcm_128->iv, ctx->iv + TLS_CIPHER_AES_GCM_128_SALT_SIZE, TLS_CIPHER_AES_GCM_128_IV_SIZE); + memcpy(crypto_info_aes_gcm_128->rec_seq, ctx->rec_seq, + TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); release_sock(sk); if (copy_to_user(optval, crypto_info_aes_gcm_128, -- cgit