CVE-2026-31678
Published: Apr 25, 2026
Modified: May 11, 2026
CVSS v3.1
7.8
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected a9020fde67a6eb77f8130feff633189f99264db1 - < 9d56aced21fb9c104e8a3f3be9b21fbafe448ffcaffected a9020fde67a6eb77f8130feff633189f99264db1 - < 42f0d3d81209654c08ffdde5a34b9b92d2645896affected a9020fde67a6eb77f8130feff633189f99264db1 - < bbe7bd722bfaea36aab3da6cc60fb4a05c644643affected a9020fde67a6eb77f8130feff633189f99264db1 - < 98b726ab5e2a4811e27c28e4d041f75bba147eabaffected a9020fde67a6eb77f8130feff633189f99264db1 - < b8c56a3fc5d879c0928f207a756b0f067f06c6a8+1 more versions |
Linux | Linux | affected 4.3unaffected 0 - < 4.3unaffected 6.1.168 - <= 6.1.*unaffected 6.6.131 - <= 6.6.*unaffected 6.12.80 - <= 6.12.*+3 more versions |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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