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().

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74406

Mitre link : CVE-2026-74406

CVE.ORG link : CVE-2026-74406

JSON object : View

Products Affected

No product.

CWE

No CWE.

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