CVE-2026-31678
openvswitch: defer tunnel netdev_put to RCU release
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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 | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
a9020fde67a6eb77f8130feff633189f99264db1 < 9d56aced21fb9c104e8a3f3be9b21fbafe448ffc a9020fde67a6eb77f8130feff633189f99264db1 < 42f0d3d81209654c08ffdde5a34b9b92d2645896 a9020fde67a6eb77f8130feff633189f99264db1 < bbe7bd722bfaea36aab3da6cc60fb4a05c644643 a9020fde67a6eb77f8130feff633189f99264db1 < 98b726ab5e2a4811e27c28e4d041f75bba147eab a9020fde67a6eb77f8130feff633189f99264db1 < b8c56a3fc5d879c0928f207a756b0f067f06c6a8 a9020fde67a6eb77f8130feff633189f99264db1 < 6931d21f87bc6d657f145798fad0bf077b82486c
Linux / Linux
4.3
References
git.kernel.org: https://git.kernel.org/stable/c/9d56aced21fb9c104e8a3f3be9b21fbafe448ffc git.kernel.org: https://git.kernel.org/stable/c/42f0d3d81209654c08ffdde5a34b9b92d2645896 git.kernel.org: https://git.kernel.org/stable/c/bbe7bd722bfaea36aab3da6cc60fb4a05c644643 git.kernel.org: https://git.kernel.org/stable/c/98b726ab5e2a4811e27c28e4d041f75bba147eab git.kernel.org: https://git.kernel.org/stable/c/b8c56a3fc5d879c0928f207a756b0f067f06c6a8 git.kernel.org: https://git.kernel.org/stable/c/6931d21f87bc6d657f145798fad0bf077b82486c