CVE-2026-74406
Linux kernel vulnerability
- Published15 Aug 2026
Description
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().
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HRemediation
No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.
References
- https://git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4
- https://git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578
- https://git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb
- https://git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd
- https://git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd
- https://git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0
Frequently asked
Is CVE-2026-74406 being actively exploited?
CVE-2026-74406 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.72%.
How severe is CVE-2026-74406?
CVE-2026-74406 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.72% probability of exploitation.
How do I fix CVE-2026-74406?
Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2026-74406 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.