CVE-2025-68312 Affecting kernel-uek-doc package, versions <0:5.4.17-2136.352.5.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDOC-15250920
  • published9 Feb 2026
  • disclosed16 Dec 2025

Introduced: 16 Dec 2025

CVE-2025-68312  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-doc to version 0:5.4.17-2136.352.5.el7uek or higher.
This issue was patched in ELSA-2026-50100.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-doc package and not the kernel-uek-doc package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

usbnet: Prevents free active kevent

The root cause of this issue are:

  1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0); put the kevent work in global workqueue. However, the kevent has not yet been scheduled when the usbnet device is unregistered. Therefore, executing free_netdev() results in the "free active object (kevent)" error reported here.

  2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(), if the usbnet device is up, ndo_stop() is executed to cancel the kevent. However, because the device is not up, ndo_stop() is not executed.

The solution to this problem is to cancel the kevent before executing free_netdev().

CVSS Base Scores

version 3.1