--- zzzz-none-000/linux-4.4.60/net/ipv4/esp4.c	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-1750e-727/linux-4.4.60/net/ipv4/esp4.c	2021-02-04 17:41:59.000000000 +0000
@@ -150,6 +150,7 @@
 	int assoclen;
 	int extralen;
 	__be64 seqno;
+	bool nosupp_sg;
 
 	/* skb is pure payload to encrypt */
 
@@ -157,6 +158,12 @@
 	alen = crypto_aead_authsize(aead);
 	ivlen = crypto_aead_ivsize(aead);
 
+	nosupp_sg = crypto_tfm_alg_flags(&aead->base) & CRYPTO_ALG_NOSUPP_SG;
+	if (nosupp_sg && skb_linearize(skb)) {
+		err = -ENOMEM;
+		goto error;
+	}
+
 	tfclen = 0;
 	if (x->tfcpad) {
 		struct xfrm_dst *dst = (struct xfrm_dst *)skb_dst(skb);
@@ -430,6 +437,7 @@
 	u8 *iv;
 	struct scatterlist *sg;
 	int err = -EINVAL;
+	bool nosupp_sg;
 
 	if (!pskb_may_pull(skb, sizeof(*esph) + ivlen))
 		goto out;
@@ -437,6 +445,12 @@
 	if (elen <= 0)
 		goto out;
 
+	nosupp_sg = crypto_tfm_alg_flags(&aead->base) & CRYPTO_ALG_NOSUPP_SG;
+	if (nosupp_sg && skb_linearize(skb)) {
+		err = -ENOMEM;
+		goto out;
+	}
+
 	err = skb_cow_data(skb, 0, &trailer);
 	if (err < 0)
 		goto out;