CVE-2026-74474

In the Linux kernel, the following vulnerability has been resolved:

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.