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-rw-r--r--include/net/tls.h1
-rw-r--r--net/tls/tls_sw.c4
2 files changed, 3 insertions, 2 deletions
diff --git a/include/net/tls.h b/include/net/tls.h
index f040edc97c50..a01c264e5f15 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -64,6 +64,7 @@
#define TLS_AAD_SPACE_SIZE 13
#define MAX_IV_SIZE 16
+#define TLS_TAG_SIZE 16
#define TLS_MAX_REC_SEQ_SIZE 8
/* For CCM mode, the full 16-bytes of IV is made of '4' fields of given sizes.
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 34e74b26211d..ae90749f182a 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -136,9 +136,9 @@ static int padding_length(struct tls_prot_info *prot, struct sk_buff *skb)
/* Determine zero-padding length */
if (prot->version == TLS_1_3_VERSION) {
+ int back = TLS_TAG_SIZE + 1;
char content_type = 0;
int err;
- int back = 17;
while (content_type == 0) {
if (back > rxm->full_len - prot->prepend_size)
@@ -2496,7 +2496,7 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx)
/* Sanity-check the sizes for stack allocations. */
if (iv_size > MAX_IV_SIZE || nonce_size > MAX_IV_SIZE ||
- rec_seq_size > TLS_MAX_REC_SEQ_SIZE) {
+ rec_seq_size > TLS_MAX_REC_SEQ_SIZE || tag_size != TLS_TAG_SIZE) {
rc = -EINVAL;
goto free_priv;
}