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-rw-r--r--net/ipv6/addrconf.c4
-rw-r--r--net/ipv6/af_inet6.c2
-rw-r--r--net/ipv6/ah6.c5
-rw-r--r--net/ipv6/datagram.c2
-rw-r--r--net/ipv6/esp6.c5
-rw-r--r--net/ipv6/icmp.c7
-rw-r--r--net/ipv6/inet6_connection_sock.c4
-rw-r--r--net/ipv6/ip6_gre.c45
-rw-r--r--net/ipv6/ip6_offload.c1
-rw-r--r--net/ipv6/ip6_tunnel.c37
-rw-r--r--net/ipv6/ip6_vti.c5
-rw-r--r--net/ipv6/ipcomp6.c5
-rw-r--r--net/ipv6/netfilter.c1
-rw-r--r--net/ipv6/netfilter/Kconfig12
-rw-r--r--net/ipv6/netfilter/ip6_tables.c30
-rw-r--r--net/ipv6/ping.c2
-rw-r--r--net/ipv6/raw.c8
-rw-r--r--net/ipv6/route.c20
-rw-r--r--net/ipv6/sit.c1
-rw-r--r--net/ipv6/syncookies.c2
-rw-r--r--net/ipv6/tcp_ipv6.c27
-rw-r--r--net/ipv6/udp.c61
22 files changed, 203 insertions, 83 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3ce9df8f86c8..01455f492e17 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5289,8 +5289,7 @@ static void addrconf_disable_change(struct net *net, __s32 newf)
struct net_device *dev;
struct inet6_dev *idev;
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
+ for_each_netdev(net, dev) {
idev = __in6_dev_get(dev);
if (idev) {
int changed = (!idev->cnf.disable_ipv6) ^ (!newf);
@@ -5299,7 +5298,6 @@ static void addrconf_disable_change(struct net *net, __s32 newf)
dev_disable_change(idev);
}
}
- rcu_read_unlock();
}
static int addrconf_disable_ipv6(struct ctl_table *table, int *p, int newf)
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index d9b25bd17bf1..1604163c2850 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -678,7 +678,7 @@ int inet6_sk_rebuild_header(struct sock *sk)
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
rcu_read_lock();
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index c52b8fc904c9..189eb10b742d 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -662,9 +662,10 @@ static int ah6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
return 0;
if (type == NDISC_REDIRECT)
- ip6_redirect(skb, net, skb->dev->ifindex, 0);
+ ip6_redirect(skb, net, skb->dev->ifindex, 0,
+ sock_net_uid(net, NULL));
else
- ip6_update_pmtu(skb, net, info, 0, 0, INVALID_UID);
+ ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
xfrm_state_put(x);
return 0;
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index ea2aa52578db..e9dcd7e587e2 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -161,7 +161,7 @@ ipv4_connected:
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
if (!fl6.flowi6_oif)
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 17df6bbebcff..cbcdd5db31f4 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -474,9 +474,10 @@ static int esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
return 0;
if (type == NDISC_REDIRECT)
- ip6_redirect(skb, net, skb->dev->ifindex, 0);
+ ip6_redirect(skb, net, skb->dev->ifindex, 0,
+ sock_net_uid(net, NULL));
else
- ip6_update_pmtu(skb, net, info, 0, 0, INVALID_UID);
+ ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
xfrm_state_put(x);
return 0;
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 41e5c9520c7d..3ae2fbe07b25 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -92,9 +92,10 @@ static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
struct net *net = dev_net(skb->dev);
if (type == ICMPV6_PKT_TOOBIG)
- ip6_update_pmtu(skb, net, info, 0, 0, INVALID_UID);
+ ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
else if (type == NDISC_REDIRECT)
- ip6_redirect(skb, net, skb->dev->ifindex, 0);
+ ip6_redirect(skb, net, skb->dev->ifindex, 0,
+ sock_net_uid(net, NULL));
if (!(type & ICMPV6_INFOMSG_MASK))
if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST)
@@ -478,6 +479,7 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
fl6.flowi6_oif = iif;
fl6.fl6_icmp_type = type;
fl6.fl6_icmp_code = code;
+ fl6.flowi6_uid = sock_net_uid(net, NULL);
security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));
sk = icmpv6_xmit_lock(net);
@@ -585,6 +587,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
fl6.flowi6_oif = l3mdev_fib_oif(skb->dev);
fl6.fl6_icmp_type = ICMPV6_ECHO_REPLY;
fl6.flowi6_mark = mark;
+ fl6.flowi6_uid = sock_net_uid(net, NULL);
security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));
sk = icmpv6_xmit_lock(net);
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 897bb6eb5751..dc79ebc14189 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -86,7 +86,7 @@ struct dst_entry *inet6_csk_route_req(const struct sock *sk,
fl6->flowi6_mark = ireq->ir_mark;
fl6->fl6_dport = ireq->ir_rmt_port;
fl6->fl6_sport = htons(ireq->ir_num);
- fl6->flowi6_uid = sock_i_uid((struct sock *)sk);
+ fl6->flowi6_uid = sk->sk_uid;
security_req_classify_flow(req, flowi6_to_flowi(fl6));
dst = ip6_dst_lookup_flow(sk, fl6, final_p);
@@ -135,7 +135,7 @@ static struct dst_entry *inet6_csk_route_socket(struct sock *sk,
fl6->flowi6_mark = sk->sk_mark;
fl6->fl6_sport = inet->inet_sport;
fl6->fl6_dport = inet->inet_dport;
- fl6->flowi6_uid = sock_i_uid(sk);
+ fl6->flowi6_uid = sk->sk_uid;
security_sk_classify_flow(sk, flowi6_to_flowi(fl6));
rcu_read_lock();
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 17430f341073..ab0efaca4a78 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -55,6 +55,7 @@
#include <net/ip6_fib.h>
#include <net/ip6_route.h>
#include <net/ip6_tunnel.h>
+#include <net/gre.h>
static bool log_ecn_error = true;
@@ -367,35 +368,37 @@ static void ip6gre_tunnel_uninit(struct net_device *dev)
static void ip6gre_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
- u8 type, u8 code, int offset, __be32 info)
+ u8 type, u8 code, int offset, __be32 info)
{
- const struct ipv6hdr *ipv6h = (const struct ipv6hdr *)skb->data;
- __be16 *p = (__be16 *)(skb->data + offset);
- int grehlen = offset + 4;
+ const struct gre_base_hdr *greh;
+ const struct ipv6hdr *ipv6h;
+ int grehlen = sizeof(*greh);
struct ip6_tnl *t;
+ int key_off = 0;
__be16 flags;
+ __be32 key;
- flags = p[0];
- if (flags&(GRE_CSUM|GRE_KEY|GRE_SEQ|GRE_ROUTING|GRE_VERSION)) {
- if (flags&(GRE_VERSION|GRE_ROUTING))
- return;
- if (flags&GRE_KEY) {
- grehlen += 4;
- if (flags&GRE_CSUM)
- grehlen += 4;
- }
+ if (!pskb_may_pull(skb, offset + grehlen))
+ return;
+ greh = (const struct gre_base_hdr *)(skb->data + offset);
+ flags = greh->flags;
+ if (flags & (GRE_VERSION | GRE_ROUTING))
+ return;
+ if (flags & GRE_CSUM)
+ grehlen += 4;
+ if (flags & GRE_KEY) {
+ key_off = grehlen + offset;
+ grehlen += 4;
}
- /* If only 8 bytes returned, keyed message will be dropped here */
- if (!pskb_may_pull(skb, grehlen))
+ if (!pskb_may_pull(skb, offset + grehlen))
return;
ipv6h = (const struct ipv6hdr *)skb->data;
- p = (__be16 *)(skb->data + offset);
+ greh = (const struct gre_base_hdr *)(skb->data + offset);
+ key = key_off ? *(__be32 *)(skb->data + key_off) : 0;
t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr,
- flags & GRE_KEY ?
- *(((__be32 *)p) + (grehlen / 4) - 1) : 0,
- p[1]);
+ key, greh->protocol);
if (!t)
return;
@@ -794,6 +797,8 @@ static inline int ip6gre_xmit_ipv4(struct sk_buff *skb, struct net_device *dev)
if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
fl6.flowi6_mark = skb->mark;
+ fl6.flowi6_uid = sock_net_uid(dev_net(dev), NULL);
+
err = ip6gre_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
if (err != 0) {
/* XXX: send ICMP error even if DF is not set. */
@@ -844,6 +849,8 @@ static inline int ip6gre_xmit_ipv6(struct sk_buff *skb, struct net_device *dev)
if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
fl6.flowi6_mark = skb->mark;
+ fl6.flowi6_uid = sock_net_uid(dev_net(dev), NULL);
+
err = ip6gre_xmit2(skb, dev, dsfield, &fl6, encap_limit, &mtu);
if (err != 0) {
if (err == -EMSGSIZE)
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 88f3d459bcfd..3feeca6a713d 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -196,6 +196,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
ops = rcu_dereference(inet6_offloads[proto]);
if (!ops || !ops->callbacks.gro_receive) {
__pskb_pull(skb, skb_gro_offset(skb));
+ skb_gro_frag0_invalidate(skb);
proto = ipv6_gso_pull_exthdrs(skb, proto);
skb_gro_pull(skb, -skb_transport_offset(skb));
skb_reset_transport_header(skb);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 2994d1f1a661..8b11a49c7dd7 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -479,18 +479,19 @@ ip6_tnl_dev_uninit(struct net_device *dev)
__u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
{
- const struct ipv6hdr *ipv6h = (const struct ipv6hdr *) raw;
- __u8 nexthdr = ipv6h->nexthdr;
- __u16 off = sizeof(*ipv6h);
+ const struct ipv6hdr *ipv6h = (const struct ipv6hdr *)raw;
+ unsigned int nhoff = raw - skb->data;
+ unsigned int off = nhoff + sizeof(*ipv6h);
+ u8 next, nexthdr = ipv6h->nexthdr;
while (ipv6_ext_hdr(nexthdr) && nexthdr != NEXTHDR_NONE) {
- __u16 optlen = 0;
struct ipv6_opt_hdr *hdr;
- if (raw + off + sizeof(*hdr) > skb->data &&
- !pskb_may_pull(skb, raw - skb->data + off + sizeof (*hdr)))
+ u16 optlen;
+
+ if (!pskb_may_pull(skb, off + sizeof(*hdr)))
break;
- hdr = (struct ipv6_opt_hdr *) (raw + off);
+ hdr = (struct ipv6_opt_hdr *)(skb->data + off);
if (nexthdr == NEXTHDR_FRAGMENT) {
struct frag_hdr *frag_hdr = (struct frag_hdr *) hdr;
if (frag_hdr->frag_off)
@@ -501,20 +502,29 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
} else {
optlen = ipv6_optlen(hdr);
}
+ /* cache hdr->nexthdr, since pskb_may_pull() might
+ * invalidate hdr
+ */
+ next = hdr->nexthdr;
if (nexthdr == NEXTHDR_DEST) {
- __u16 i = off + 2;
+ u16 i = 2;
+
+ /* Remember : hdr is no longer valid at this point. */
+ if (!pskb_may_pull(skb, off + optlen))
+ break;
+
while (1) {
struct ipv6_tlv_tnl_enc_lim *tel;
/* No more room for encapsulation limit */
- if (i + sizeof (*tel) > off + optlen)
+ if (i + sizeof(*tel) > optlen)
break;
- tel = (struct ipv6_tlv_tnl_enc_lim *) &raw[i];
+ tel = (struct ipv6_tlv_tnl_enc_lim *)(skb->data + off + i);
/* return index of option if found and valid */
if (tel->type == IPV6_TLV_TNL_ENCAP_LIMIT &&
tel->length == 1)
- return i;
+ return i + off - nhoff;
/* else jump to next option */
if (tel->type)
i += tel->length + 2;
@@ -522,7 +532,7 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
i++;
}
}
- nexthdr = hdr->nexthdr;
+ nexthdr = next;
off += optlen;
}
return 0;
@@ -1203,6 +1213,8 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_IPIP;
+ fl6.flowi6_uid = sock_net_uid(dev_net(dev), NULL);
+
dsfield = ipv4_get_dsfield(iph);
if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
@@ -1256,6 +1268,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
memcpy(&fl6, &t->fl.u.ip6, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_IPV6;
+ fl6.flowi6_uid = sock_net_uid(dev_net(dev), NULL);
dsfield = ipv6_get_dsfield(ipv6h);
if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index c76ebc7fc52d..24fb9c0efd00 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -597,9 +597,10 @@ static int vti6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
return 0;
if (type == NDISC_REDIRECT)
- ip6_redirect(skb, net, skb->dev->ifindex, 0);
+ ip6_redirect(skb, net, skb->dev->ifindex, 0,
+ sock_net_uid(net, NULL));
else
- ip6_update_pmtu(skb, net, info, 0, 0, INVALID_UID);
+ ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
xfrm_state_put(x);
return 0;
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index b247baceb797..54d165b9845a 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -74,9 +74,10 @@ static int ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
return 0;
if (type == NDISC_REDIRECT)
- ip6_redirect(skb, net, skb->dev->ifindex, 0);
+ ip6_redirect(skb, net, skb->dev->ifindex, 0,
+ sock_net_uid(net, NULL));
else
- ip6_update_pmtu(skb, net, info, 0, 0, INVALID_UID);
+ ip6_update_pmtu(skb, net, info, 0, 0, sock_net_uid(net, NULL));
xfrm_state_put(x);
return 0;
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index d11c46833d61..39970e212ad5 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -26,6 +26,7 @@ int ip6_route_me_harder(struct net *net, struct sk_buff *skb)
struct flowi6 fl6 = {
.flowi6_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0,
.flowi6_mark = skb->mark,
+ .flowi6_uid = sock_net_uid(net, skb->sk),
.daddr = iph->daddr,
.saddr = iph->saddr,
};
diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
index e10a04c9cdc7..cf336d670f8b 100644
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -135,6 +135,18 @@ config IP6_NF_IPTABLES
if IP6_NF_IPTABLES
+config IP6_NF_IPTABLES_128
+ tristate "128 bit arithmetic for iptables matching"
+ depends on IP6_NF_IPTABLES
+ help
+ This enables 128 bit matching in ip6tables to help optimize cases
+ where there is no match required. ip6tables matching for ipv6 always
+ has a mask if an address is specified for match. Adding a check for
+ mask prior to that helps to improve performance as it avoids the
+ masked comparison.
+
+ Note that this feature depends on the architecture. If unsure, say N.
+
# The simple matches.
config IP6_NF_MATCH_AH
tristate '"ah" match support'
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 22f39e00bef3..6fd784643d6e 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -94,22 +94,26 @@ ip6_packet_match(const struct sk_buff *skb,
{
unsigned long ret;
const struct ipv6hdr *ipv6 = ipv6_hdr(skb);
+#if IS_ENABLED(IP6_NF_IPTABLES_128)
+ const __uint128_t *ulm1 = (const __uint128_t *)&ip6info->smsk;
+ const __uint128_t *ulm2 = (const __uint128_t *)&ip6info->dmsk;
+#endif
#define FWINV(bool, invflg) ((bool) ^ !!(ip6info->invflags & (invflg)))
- if (FWINV(ipv6_masked_addr_cmp(&ipv6->saddr, &ip6info->smsk,
- &ip6info->src), IP6T_INV_SRCIP) ||
- FWINV(ipv6_masked_addr_cmp(&ipv6->daddr, &ip6info->dmsk,
- &ip6info->dst), IP6T_INV_DSTIP)) {
- dprintf("Source or dest mismatch.\n");
-/*
- dprintf("SRC: %u. Mask: %u. Target: %u.%s\n", ip->saddr,
- ipinfo->smsk.s_addr, ipinfo->src.s_addr,
- ipinfo->invflags & IP6T_INV_SRCIP ? " (INV)" : "");
- dprintf("DST: %u. Mask: %u. Target: %u.%s\n", ip->daddr,
- ipinfo->dmsk.s_addr, ipinfo->dst.s_addr,
- ipinfo->invflags & IP6T_INV_DSTIP ? " (INV)" : "");*/
- return false;
+#if IS_ENABLED(IP6_NF_IPTABLES_128)
+ if (*ulm1 || *ulm2)
+#endif
+ {
+ if (FWINV(ipv6_masked_addr_cmp
+ (&ipv6->saddr, &ip6info->smsk, &ip6info->src),
+ IP6T_INV_SRCIP) ||
+ FWINV(ipv6_masked_addr_cmp(&ipv6->daddr, &ip6info->dmsk,
+ &ip6info->dst),
+ IP6T_INV_DSTIP)) {
+ dprintf("Source or dest mismatch.\n");
+ return false;
+ }
}
ret = ifname_compare_aligned(indev, ip6info->iniface, ip6info->iniface_mask);
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index fa65e92e9510..1737fc0f2988 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -141,7 +141,7 @@ int ping_v6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
fl6.daddr = *daddr;
fl6.flowi6_oif = oif;
fl6.flowi6_mark = sk->sk_mark;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
fl6.fl6_icmp_type = user_icmph.icmp6_type;
fl6.fl6_icmp_code = user_icmph.icmp6_code;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index d9ad71a01b4c..d503b7f373a3 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -589,7 +589,11 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi6 *fl6,
}
offset += skb_transport_offset(skb);
- BUG_ON(skb_copy_bits(skb, offset, &csum, 2));
+ err = skb_copy_bits(skb, offset, &csum, 2);
+ if (err < 0) {
+ ip6_flush_pending_frames(sk);
+ goto out;
+ }
/* in case cksum was not initialized */
if (unlikely(csum))
@@ -768,7 +772,7 @@ static int rawv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_mark = sk->sk_mark;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
if (sin6) {
if (addr_len < SIN6_LEN_RFC2133)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index fe9e22ac065a..add152e8352c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1403,7 +1403,7 @@ EXPORT_SYMBOL_GPL(ip6_update_pmtu);
void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, __be32 mtu)
{
ip6_update_pmtu(skb, sock_net(sk), mtu,
- sk->sk_bound_dev_if, sk->sk_mark, sock_i_uid(sk));
+ sk->sk_bound_dev_if, sk->sk_mark, sk->sk_uid);
}
EXPORT_SYMBOL_GPL(ip6_sk_update_pmtu);
@@ -1484,7 +1484,8 @@ static struct dst_entry *ip6_route_redirect(struct net *net,
flags, __ip6_route_redirect);
}
-void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark)
+void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark,
+ kuid_t uid)
{
const struct ipv6hdr *iph = (struct ipv6hdr *) skb->data;
struct dst_entry *dst;
@@ -1497,6 +1498,7 @@ void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark)
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
fl6.flowlabel = ip6_flowinfo(iph);
+ fl6.flowi6_uid = uid;
dst = ip6_route_redirect(net, &fl6, &ipv6_hdr(skb)->saddr);
rt6_do_redirect(dst, NULL, skb);
@@ -1518,6 +1520,7 @@ void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
fl6.flowi6_mark = mark;
fl6.daddr = msg->dest;
fl6.saddr = iph->daddr;
+ fl6.flowi6_uid = sock_net_uid(net, NULL);
dst = ip6_route_redirect(net, &fl6, &iph->saddr);
rt6_do_redirect(dst, NULL, skb);
@@ -1526,7 +1529,8 @@ void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk)
{
- ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, sk->sk_mark);
+ ip6_redirect(skb, sock_net(sk), sk->sk_bound_dev_if, sk->sk_mark,
+ sk->sk_uid);
}
EXPORT_SYMBOL_GPL(ip6_sk_redirect);
@@ -3181,7 +3185,8 @@ static int rt6_fill_node(struct net *net,
if (nla_put_u8(skb, RTA_PREF, IPV6_EXTRACT_PREF(rt->rt6i_flags)))
goto nla_put_failure;
- lwtunnel_fill_encap(skb, rt->dst.lwtstate);
+ if (lwtunnel_fill_encap(skb, rt->dst.lwtstate) < 0)
+ goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;
@@ -3195,6 +3200,10 @@ int rt6_dump_route(struct rt6_info *rt, void *p_arg)
{
struct rt6_rtnl_dump_arg *arg = (struct rt6_rtnl_dump_arg *) p_arg;
int prefix;
+ struct net *net = arg->net;
+
+ if (rt == net->ipv6.ip6_null_entry)
+ return 0;
if (nlmsg_len(arg->cb->nlh) >= sizeof(struct rtmsg)) {
struct rtmsg *rtm = nlmsg_data(arg->cb->nlh);
@@ -3202,7 +3211,7 @@ int rt6_dump_route(struct rt6_info *rt, void *p_arg)
} else
prefix = 0;
- return rt6_fill_node(arg->net,
+ return rt6_fill_node(net,
arg->skb, rt, NULL, NULL, 0, RTM_NEWROUTE,
NETLINK_CB(arg->cb->skb).portid, arg->cb->nlh->nlmsg_seq,
prefix, 0, NLM_F_MULTI);
@@ -3253,6 +3262,7 @@ static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh)
nla_get_u32(tb[RTA_UID]));
else
fl6.flowi6_uid = iif ? INVALID_UID : current_uid();
+
if (iif) {
struct net_device *dev;
int flags = 0;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3da2b16356eb..184f0fe35dc6 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1389,6 +1389,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
tunnel->dst_cache = alloc_percpu(struct ip_tunnel_dst);
if (!tunnel->dst_cache) {
free_percpu(dev->tstats);
+ dev->tstats = NULL;
return -ENOMEM;
}
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index a22015fab95e..336843ca4e6b 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -228,7 +228,7 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
fl6.flowi6_mark = ireq->ir_mark;
fl6.fl6_dport = ireq->ir_rmt_port;
fl6.fl6_sport = inet_sk(sk)->inet_sport;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, final_p);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 3bd3d19b45a0..108b39967694 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -234,7 +234,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
fl6.flowi6_mark = sk->sk_mark;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
opt = rcu_dereference_protected(np->opt, sock_owned_by_user(sk));
final_p = fl6_update_dst(&fl6, opt, &final);
@@ -814,6 +814,7 @@ static void tcp_v6_send_response(const struct sock *sk, struct sk_buff *skb, u32
fl6.flowi6_mark = IP6_REPLY_MARK(net, skb->mark);
fl6.fl6_dport = t1->dest;
fl6.fl6_sport = t1->source;
+ fl6.flowi6_uid = sock_net_uid(net, sk && sk_fullsock(sk) ? sk : NULL);
security_skb_classify_flow(skb, flowi6_to_flowi(&fl6));
/* Pass a socket to ip6_dst_lookup either it is for RST
@@ -975,6 +976,16 @@ drop:
return 0; /* don't send reset */
}
+static void tcp_v6_restore_cb(struct sk_buff *skb)
+{
+ /* We need to move header back to the beginning if xfrm6_policy_check()
+ * and tcp_v6_fill_cb() are going to be called again.
+ * ip6_datagram_recv_specific_ctl() also expects IP6CB to be there.
+ */
+ memmove(IP6CB(skb), &TCP_SKB_CB(skb)->header.h6,
+ sizeof(struct inet6_skb_parm));
+}
+
static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
struct request_sock *req,
struct dst_entry *dst,
@@ -1164,8 +1175,10 @@ static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *
sk_gfp_atomic(sk, GFP_ATOMIC));
consume_skb(ireq->pktopts);
ireq->pktopts = NULL;
- if (newnp->pktoptions)
+ if (newnp->pktoptions) {
+ tcp_v6_restore_cb(newnp->pktoptions);
skb_set_owner_r(newnp->pktoptions, newsk);
+ }
}
}
@@ -1180,16 +1193,6 @@ out:
return NULL;
}
-static void tcp_v6_restore_cb(struct sk_buff *skb)
-{
- /* We need to move header back to the beginning if xfrm6_policy_check()
- * and tcp_v6_fill_cb() are going to be called again.
- * ip6_datagram_recv_specific_ctl() also expects IP6CB to be there.
- */
- memmove(IP6CB(skb), &TCP_SKB_CB(skb)->header.h6,
- sizeof(struct inet6_skb_parm));
-}
-
/* The socket must have it's spinlock held when we get
* here, unless it is a TCP_LISTEN socket.
*
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1207379c1cce..003dd1d040ca 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -958,6 +958,64 @@ discard:
return 0;
}
+static struct sock *__udp6_lib_demux_lookup(struct net *net,
+ __be16 loc_port, const struct in6_addr *loc_addr,
+ __be16 rmt_port, const struct in6_addr *rmt_addr,
+ int dif)
+{
+ struct sock *sk;
+
+ rcu_read_lock();
+ sk = __udp6_lib_lookup(net, rmt_addr, rmt_port, loc_addr, loc_port,
+ dif, &udp_table);
+ if (sk && !atomic_inc_not_zero(&sk->sk_refcnt))
+ sk = NULL;
+ rcu_read_unlock();
+
+ return sk;
+}
+
+static void udp_v6_early_demux(struct sk_buff *skb)
+{
+ struct net *net = dev_net(skb->dev);
+ const struct udphdr *uh;
+ struct sock *sk;
+ struct dst_entry *dst;
+ int dif = skb->dev->ifindex;
+
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) +
+ sizeof(struct udphdr)))
+ return;
+
+ uh = udp_hdr(skb);
+
+ if (skb->pkt_type == PACKET_HOST)
+ sk = __udp6_lib_demux_lookup(net, uh->dest,
+ &ipv6_hdr(skb)->daddr,
+ uh->source, &ipv6_hdr(skb)->saddr,
+ dif);
+ else
+ return;
+
+ if (!sk)
+ return;
+
+ skb->sk = sk;
+ skb->destructor = sock_efree;
+ dst = READ_ONCE(sk->sk_rx_dst);
+
+ if (dst)
+ dst = dst_check(dst, inet6_sk(sk)->rx_dst_cookie);
+ if (dst) {
+ if (dst->flags & DST_NOCACHE) {
+ if (likely(atomic_inc_not_zero(&dst->__refcnt)))
+ skb_dst_set(skb, dst);
+ } else {
+ skb_dst_set_noref(skb, dst);
+ }
+ }
+}
+
static __inline__ int udpv6_rcv(struct sk_buff *skb)
{
return __udp6_lib_rcv(skb, &udp_table, IPPROTO_UDP);
@@ -1244,7 +1302,7 @@ do_udp_sendmsg:
fl6.flowi6_oif = np->sticky_pktinfo.ipi6_ifindex;
fl6.flowi6_mark = sk->sk_mark;
- fl6.flowi6_uid = sock_i_uid(sk);
+ fl6.flowi6_uid = sk->sk_uid;
if (msg->msg_controllen) {
opt = &opt_space;
@@ -1461,6 +1519,7 @@ int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
#endif
static const struct inet6_protocol udpv6_protocol = {
+ .early_demux = udp_v6_early_demux,
.handler = udpv6_rcv,
.err_handler = udpv6_err,
.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-27 09:17:21 +0000