Eric Dumazet b9553558b4 vxlan: use pskb_network_may_pull() for transmit path header pulls ...

In vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was
being called to verify the availability of network layer headers (ARP, IPv6/ND,
IP/IPv6 MDB keys).

However, during transmit skb->data points to the MAC header, so skb_network_offset(skb)
is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb->data
rather than skb_network_offset(skb) + len, which can leave part of the network header
in non-linear frags.

Replace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly
account for the MAC header offset.

Fixes: e4f67addf1 ("add DOVE extensions for VXLAN")
Fixes: f564f45c45 ("vxlan: add ipv6 proxy support")
Fixes: 0f83e69f44 ("vxlan: Add MDB data path support")
Signed-off-by: Eric Dumazet <[email protected]>
Cc: [email protected]
Reviewed-by: Vadim Fedorenko <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

2026-07-27 15:16:15 -07:00

..

Makefile

…

vxlan_core.c

vxlan: use pskb_network_may_pull() for transmit path header pulls

2026-07-27 15:16:15 -07:00

vxlan_mdb.c

vxlan: use pskb_network_may_pull() for transmit path header pulls

2026-07-27 15:16:15 -07:00

vxlan_multicast.c

vxlan: Store struct sock in struct vxlan_sock.

2026-05-05 17:47:04 -07:00

vxlan_private.h

…

vxlan_vnifilter.c

vxlan: vnifilter: fix spurious notification on VNI update

2026-06-04 08:47:45 -07:00