diff --git a/include/net/seg6.h b/include/net/seg6.h
index 640724b35273..9d19c15e8545 100644
--- a/include/net/seg6.h
+++ b/include/net/seg6.h
@@ -57,7 +57,7 @@ extern void seg6_iptunnel_exit(void);
 extern int seg6_local_init(void);
 extern void seg6_local_exit(void);
 
-extern bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len);
+extern bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len, bool reduced);
 extern int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh,
 			     int proto);
 extern int seg6_do_srh_inline(struct sk_buff *skb, struct ipv6_sr_hdr *osrh);
diff --git a/net/core/filter.c b/net/core/filter.c
index 79174d8c8864..ed3bc8719df1 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -5123,7 +5123,7 @@ static int bpf_push_seg6_encap(struct sk_buff *skb, u32 type, void *hdr, u32 len
 	int err;
 	struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *)hdr;
 
-	if (!seg6_validate_srh(srh, len))
+	if (!seg6_validate_srh(srh, len, false))
 		return -EINVAL;
 
 	switch (type) {
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 1ceb6de0152f..10f0df90a106 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -464,7 +464,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 				struct ipv6_sr_hdr *srh = (struct ipv6_sr_hdr *)
 							  opt->srcrt;
 
-				if (!seg6_validate_srh(srh, optlen))
+				if (!seg6_validate_srh(srh, optlen, false))
 					goto sticky_done;
 				break;
 			}
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c
index 97f60825e2f6..166bd2f06ce6 100644
--- a/net/ipv6/seg6.c
+++ b/net/ipv6/seg6.c
@@ -25,7 +25,7 @@
 #include <net/seg6_hmac.h>
 #endif
 
-bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len)
+bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len, bool reduced)
 {
 	unsigned int tlv_offset;
 	int max_last_entry;
@@ -37,13 +37,17 @@ bool seg6_validate_srh(struct ipv6_sr_hdr *srh, int len)
 	if (((srh->hdrlen + 1) << 3) != len)
 		return false;
 
-	max_last_entry = (srh->hdrlen / 2) - 1;
-
-	if (srh->first_segment > max_last_entry)
+	if (!reduced && srh->segments_left > srh->first_segment) {
 		return false;
+	} else {
+		max_last_entry = (srh->hdrlen / 2) - 1;
 
-	if (srh->segments_left > srh->first_segment + 1)
-		return false;
+		if (srh->first_segment > max_last_entry)
+			return false;
+
+		if (srh->segments_left > srh->first_segment + 1)
+			return false;
+	}
 
 	tlv_offset = sizeof(*srh) + ((srh->first_segment + 1) << 4);
 
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index 185b9db0b575..0a4175f18b5b 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -435,7 +435,7 @@ static int seg6_build_state(struct nlattr *nla,
 	}
 
 	/* verify that SRH is consistent */
-	if (!seg6_validate_srh(tuninfo->srh, tuninfo_len - sizeof(*tuninfo)))
+	if (!seg6_validate_srh(tuninfo->srh, tuninfo_len - sizeof(*tuninfo), false))
 		return -EINVAL;
 
 	newts = lwtunnel_state_alloc(tuninfo_len + sizeof(*slwt));
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c
index ef5b5cee2201..2f8deabf7c17 100644
--- a/net/ipv6/seg6_local.c
+++ b/net/ipv6/seg6_local.c
@@ -87,7 +87,7 @@ static struct ipv6_sr_hdr *get_srh(struct sk_buff *skb)
 	 */
 	srh = (struct ipv6_sr_hdr *)(skb->data + srhoff);
 
-	if (!seg6_validate_srh(srh, len))
+	if (!seg6_validate_srh(srh, len, true))
 		return NULL;
 
 	return srh;
@@ -479,7 +479,7 @@ bool seg6_bpf_has_valid_srh(struct sk_buff *skb)
 			return false;
 
 		srh->hdrlen = (u8)(srh_state->hdrlen >> 3);
-		if (!seg6_validate_srh(srh, (srh->hdrlen + 1) << 3))
+		if (!seg6_validate_srh(srh, (srh->hdrlen + 1) << 3, true))
 			return false;
 
 		srh_state->valid = true;
@@ -654,7 +654,7 @@ static int parse_nla_srh(struct nlattr **attrs, struct seg6_local_lwt *slwt)
 	if (len < sizeof(*srh) + sizeof(struct in6_addr))
 		return -EINVAL;
 
-	if (!seg6_validate_srh(srh, len))
+	if (!seg6_validate_srh(srh, len, false))
 		return -EINVAL;
 
 	slwt->srh = kmemdup(srh, len, GFP_KERNEL);