6 files changed, 25 insertions, 22 deletions

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index a8d961d3a477..5fa0e37305d9 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -569,24 +569,6 @@ looped_back:
 		return -1;
 	}
 
-	if (skb_cloned(skb)) {
-		if (pskb_expand_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE, 0,
-				     GFP_ATOMIC)) {
-			__IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
-					IPSTATS_MIB_OUTDISCARDS);
-			kfree_skb(skb);
-			return -1;
-		}
-	} else {
-		err = skb_cow_head(skb, IPV6_RPL_SRH_WORST_SWAP_SIZE);
-		if (unlikely(err)) {
-			kfree_skb(skb);
-			return -1;
-		}
-	}
-
-	hdr = (struct ipv6_rpl_sr_hdr *)skb_transport_header(skb);
-
 	if (!pskb_may_pull(skb, ipv6_rpl_srh_size(n, hdr->cmpri,
 						  hdr->cmpre))) {
 		kfree_skb(skb);
@@ -630,6 +612,17 @@ looped_back:
 	skb_pull(skb, ((hdr->hdrlen + 1) << 3));
 	skb_postpull_rcsum(skb, oldhdr,
 			   sizeof(struct ipv6hdr) + ((hdr->hdrlen + 1) << 3));
+	if (unlikely(!hdr->segments_left)) {
+		if (pskb_expand_head(skb, sizeof(struct ipv6hdr) + ((chdr->hdrlen + 1) << 3), 0,
+				     GFP_ATOMIC)) {
+			__IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_OUTDISCARDS);
+			kfree_skb(skb);
+			kfree(buf);
+			return -1;
+		}
+
+		oldhdr = ipv6_hdr(skb);
+	}
 	skb_push(skb, ((chdr->hdrlen + 1) << 3) + sizeof(struct ipv6hdr));
 	skb_reset_network_header(skb);
 	skb_mac_header_rebuild(skb);
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index da46c4284676..49e31e4ae7b7 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -143,6 +143,8 @@ int ipv6_find_tlv(const struct sk_buff *skb, int offset, int type)
 			optlen = 1;
 			break;
 		default:
+			if (len < 2)
+				goto bad;
 			optlen = nh[offset + 1] + 2;
 			if (optlen > len)
 				goto bad;
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index c4835dbdfcff..f804c11e2146 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -114,7 +114,8 @@ static int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 	addr_type = ipv6_addr_type(daddr);
 	if ((__ipv6_addr_needs_scope_id(addr_type) && !oif) ||
 	    (addr_type & IPV6_ADDR_MAPPED) ||
-	    (oif && sk->sk_bound_dev_if && oif != sk->sk_bound_dev_if))
+	    (oif && sk->sk_bound_dev_if && oif != sk->sk_bound_dev_if &&
+	     l3mdev_master_ifindex_by_index(sock_net(sk), oif) != sk->sk_bound_dev_if))
 		return -EINVAL;
 
 	ipcm6_init_sk(&ipc6, np);
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 7d0adb612bdd..44ee7a2e72ac 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -793,7 +793,8 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 
 		if (!proto)
 			proto = inet->inet_num;
-		else if (proto != inet->inet_num)
+		else if (proto != inet->inet_num &&
+			 inet->inet_num != IPPROTO_RAW)
 			return -EINVAL;
 
 		if (proto > 255)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index e3aec46bd466..392aaa373b66 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -6412,9 +6412,9 @@ static struct ctl_table ipv6_route_table_template[] = {
 	{
 		.procname	=	"skip_notify_on_dev_down",
 		.data		=	&init_net.ipv6.sysctl.skip_notify_on_dev_down,
-		.maxlen		=	sizeof(int),
+		.maxlen		=	sizeof(u8),
 		.mode		=	0644,
-		.proc_handler	=	proc_dointvec_minmax,
+		.proc_handler	=	proc_dou8vec_minmax,
 		.extra1		=	SYSCTL_ZERO,
 		.extra2		=	SYSCTL_ONE,
 	},
diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c
index 67eaf3ca14ce..8e010d07917a 100644
--- a/net/ipv6/udplite.c
+++ b/net/ipv6/udplite.c
@@ -8,6 +8,8 @@
  *  Changes:
  *  Fixes:
  */
+#define pr_fmt(fmt) "UDPLite6: " fmt
+
 #include <linux/export.h>
 #include <linux/proc_fs.h>
 #include "udp_impl.h"
@@ -16,6 +18,8 @@ static int udplitev6_sk_init(struct sock *sk)
 {
 	udpv6_init_sock(sk);
 	udp_sk(sk)->pcflag = UDPLITE_BIT;
+	pr_warn_once("UDP-Lite is deprecated and scheduled to be removed in 2025, "
+		     "please contact the netdev mailing list\n");
 	return 0;
 }
 
@@ -60,6 +64,8 @@ struct proto udplitev6_prot = {
 	.per_cpu_fw_alloc  = &udp_memory_per_cpu_fw_alloc,
 
 	.sysctl_mem	   = sysctl_udp_mem,
+	.sysctl_wmem_offset = offsetof(struct net, ipv4.sysctl_udp_wmem_min),
+	.sysctl_rmem_offset = offsetof(struct net, ipv4.sysctl_udp_rmem_min),
 	.obj_size	   = sizeof(struct udp6_sock),
 	.h.udp_table	   = &udplite_table,
 };