TNCVE-2026-31678 | Vulnetix

TNCVE-2026-31678 PUBLISHED

Record from tenable · Published April 25, 2026

In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdev_put to RCU release ovs_netdev_tunnel_destroy() may run after NETDEV_UNREGISTER already detached the device. Dropping the netdev reference in destroy can race with concurrent readers that still observe vport->dev. Do not release vport->dev in ovs_netdev_tunnel_destroy(). Instead, let vport_netdev_free() drop the reference from the RCU callback, matching the non-tunnel destroy path and avoiding additional synchronization under RTNL.

Timeline

Apr 25, 2026 CVE Published

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln TNCVE-2026-31678
vulnetix vdb fixes TNCVE-2026-31678

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/TNCVE-2026-31678/fixes/registry"

The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart

References

Tenable: CVE-2026-31678 advisory

Look up in the Resolve Platform →