CVE-2026-31678

Katalog CVE

CVSS 7.8 · High EPSS 0,14%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

25 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 2,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/42f0d3d81209654c08ffdde5a34b9b92d2645896 patch
• https://git.kernel.org/stable/c/6931d21f87bc6d657f145798fad0bf077b82486c patch
• https://git.kernel.org/stable/c/98b726ab5e2a4811e27c28e4d041f75bba147eab patch
• https://git.kernel.org/stable/c/9d56aced21fb9c104e8a3f3be9b21fbafe448ffc patch
• https://git.kernel.org/stable/c/b8c56a3fc5d879c0928f207a756b0f067f06c6a8 patch
• https://git.kernel.org/stable/c/bbe7bd722bfaea36aab3da6cc60fb4a05c644643 patch