CVE-2026-74406

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-08-15

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().

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Exploitation outlook

Low exploitation risk0.50% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 40% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-74406: In the Linux kernel, the following vulnerability has been resolved: vxlan: Fix potential null-…nvd · 2026-08-15

External references

NVD record for CVE-2026-74406

CVE.org record

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