CVE-2026-74406

CriticalCVSS 9.8

Published: 15/08/2026(UTC)Updated: 17/08/2026(UTC)Translated: 15/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.17%

7th percentile - higher than 7% of all known CVEs

Summary

In the Linux kernel, vxlan_gro_prepare_receive() has a potential null pointer dereference when sk_user_data is set to NULL during execution. This could lead to a system crash.

Risk Assessment

Risk of kernel panic due to null pointer dereference.

Recommendation

Install a kernel patch that adds a NULL check after initialization.

Original NVD description (English source)

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().