CVE-2026-74406

Critical · 9.8

CVSS

9.8

EPSS

0.5%

Published

Aug 15, 2026

CISA due date

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The record

In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive(). udp_tunnel_sock_release() could set sk->sk_user_data to NULL while vxlan_gro_prepare_receive() is running. Let's check if rcu_dereference_sk_user_data() is NULL after skb_gro_remcsum_init().

Affected packages

Ecosystem	Package	Introduced	Fixed