Strix
57.7K

CVE-2026-74406

CRITICALCVSS 9.8/10EPSS 0.17%

Last modified

CVE-2026-74406 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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().. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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().

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.17%

7.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5602c48cf87562c2f95b831d690631935e834295, < 9c58c729d32e7cea5772cc44929c6cd61e5a31cd; >= 5602c48cf87562c2f95b831d690631935e834295, < f79c80f173fda9545b220c1f094b65fc06c252d0; >= 5602c48cf87562c2f95b831d690631935e834295, < 08f40c0d23c67c3aa4224c3311e134999c721fb4; >= 5602c48cf87562c2f95b831d690631935e834295, < 4a8cde6f7281ea2c4c290f9ad9923b3631defceb; >= 5602c48cf87562c2f95b831d690631935e834295, < ef44dac2a37f86eeae6b88ed10a6d60b35387dfd; >= 5602c48cf87562c2f95b831d690631935e834295, < 30a45c0bffdd62350261e2f2689fdba426a33578
LinuxLinux4.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74406?
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().
How severe is CVE-2026-74406?
CVE-2026-74406 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74406?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-74406?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST