CVE-2026-31678

HIGH EPSS 0.9%
Published Apr 25, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 25, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
0.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-367

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥4.3  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.131
linuxlinux_kernel*≥6.7  –  <6.12.80
linuxlinux_kernel*≥6.13  –  <6.18.21
linuxlinux_kernel*≥6.19  –  <6.19.11
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 6

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

Remediation

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