CVEvulnerability
CVE-2026-74406
9.8 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-16
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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().
References
- https://git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4 git.kernel.org
- https://git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578 git.kernel.org
- https://git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb git.kernel.org
- https://git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd git.kernel.org
- https://git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd git.kernel.org
- https://git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0 git.kernel.org