Georg Kohmann
ecdb232730
net: ipv6: Discard next-hop MTU less than minimum link MTU ...
commit 4a65dff81a04f874fa6915c7f069b4dc2c4010e4 upstream.
When a ICMPV6_PKT_TOOBIG report a next-hop MTU that is less than the IPv6
minimum link MTU, the estimated path MTU is reduced to the minimum link
MTU. This behaviour breaks TAHI IPv6 Core Conformance Test v6LC4.1.6:
Packet Too Big Less than IPv6 MTU.
Referring to RFC 8201 section 4: "If a node receives a Packet Too Big
message reporting a next-hop MTU that is less than the IPv6 minimum link
MTU, it must discard it. A node must not reduce its estimate of the Path
MTU below the IPv6 minimum link MTU on receipt of a Packet Too Big
message."
Drop the path MTU update if reported MTU is less than the minimum link MTU.
Signed-off-by: Georg Kohmann <geokohma@cisco.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-17 18:25:06 +02:00
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net: 802: LLC+SNAP OID:PID lookup on start of skb data
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net: vlan: don't propagate flags on open
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atm: clip: Fix NULL pointer dereference in vcc_sendmsg()
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batman-adv: Ignore own maximum aggregation size during RX
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Bluetooth: L2CAP: Fix L2CAP MTU negotiation
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can: bcm: add missing rcu read protection for procfs content
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libceph: fix race between delayed_work() and ceph_monc_stop()
2024-07-18 11:40:55 +02:00
sock: Correct error checking condition for (assign|release)_proto_idx()
2025-06-27 11:02:55 +01:00
net: fix data-races around sk->sk_forward_alloc
2025-02-01 18:18:52 +01:00
ethernet: Add helper for assigning packet type when dest address does not match device address
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hsr: Handle failures in module init
2024-03-26 18:22:25 -04:00
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2024-12-14 19:44:51 +01:00
tcp: fix tcp_packet_delayed() for tcp_is_non_sack_preventing_reopen() behavior
2025-06-27 11:02:57 +01:00
net: ipv6: Discard next-hop MTU less than minimum link MTU
2025-07-17 18:25:06 +02:00
s390/iucv: fix receive buffer virtual vs physical address confusion
2024-09-04 13:14:57 +02:00
kcm: Serialise kcm_sendmsg() for the same socket.
2024-09-04 13:14:59 +02:00
genetlink: hold RCU in genlmsg_mcast()
2024-11-08 16:20:50 +01:00
llc: fix data loss when reading from a socket in llc_ui_recvmsg()
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wifi: mac80211: drop invalid source address OCB frames
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mac802154: check local interfaces before deleting sdata list
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mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu().
2025-06-27 11:02:57 +01:00
net: ncsi: Fix GCPS 64-bit member variables
2025-06-27 11:02:46 +01:00
netfilter: nft_socket: fix sk refcount leaks
2025-06-27 11:02:44 +01:00
calipso: unlock rcu before returning -EAFNOSUPPORT
2025-06-27 11:02:50 +01:00
netlink: Fix rmem check in netlink_broadcast_deliver().
2025-07-17 18:25:03 +02:00
netrom: check buffer length before accessing it
2025-01-09 13:23:35 +01:00
NFC: nci: uart: Set tty->disc_data only in success path
2025-06-27 11:02:51 +01:00
nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment().
2024-05-17 11:43:49 +02:00
openvswitch: Fix unsafe attribute parsing in output_userspace()
2025-06-04 14:32:29 +02:00
af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK
2025-01-09 13:23:35 +01:00
phonet: fix rtm_phonet_notify() skb allocation
2024-05-17 11:43:54 +02:00
net: qrtr: Update packets cloning when broadcasting
2024-11-08 16:20:33 +01:00
net:rds: Fix possible deadlock in rds_message_put
2024-09-04 13:15:03 +02:00
net: rfkill: gpio: Add check for clk_enable()
2024-12-14 19:44:27 +01:00
rose: fix dangling neighbour pointers in rose_rt_device_down()
2025-07-17 18:25:00 +02:00
rxrpc: Fix oops due to non-existence of prealloc backlog struct
2025-07-17 18:25:02 +02:00
net/sched: Abort __tc_modify_qdisc if parent class does not exist
2025-07-17 18:25:02 +02:00
sctp: Do not wake readers in __sctp_write_space()
2025-06-27 11:02:54 +01:00
net/smc: check sndbuf_space again after NOSPACE flag is set in smc_poll
2025-01-09 13:23:27 +01:00
xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create
2025-06-27 11:02:58 +01:00
tipc: Fix use-after-free in tipc_conn_close().
2025-07-17 18:25:01 +02:00
ktls, sockmap: Fix missing uncharge operation
2025-06-27 11:02:46 +01:00
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2024-09-12 11:03:52 +02:00
vsock/vmci: Clear the vmci transport packet properly when initializing it
2025-07-17 18:24:55 +02:00
wifi: nl80211: reject cooked mode if it is set along with other flags
2025-03-13 12:43:28 +01:00
xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
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xfrm: Sanitize marks before insert
2025-06-04 14:32:35 +02:00
ecdb232730