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
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-74406 ↗
- git.kernel.org/stable/c/022af89207fcc992ec5c712c14e2e018c335eb1e ↗
- git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4 ↗
- git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578 ↗
- git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb ↗
- git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd ↗
- git.kernel.org/stable/c/a3104cc1fed994519538301efcaab175f9af6008 ↗
- git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd ↗
- git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0 ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.