CVE-2025-40056 Affecting kernel-uek-debug-core package, versions <0:6.12.0-106.55.4.1.el9uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (14th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEKDEBUGCORE-14397070
  • published12 Dec 2025
  • disclosed28 Oct 2025

Introduced: 28 Oct 2025

CVE-2025-40056  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek-debug-core to version 0:6.12.0-106.55.4.1.el9uek or higher.
This issue was patched in ELSA-2025-28040.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-core package and not the kernel-uek-debug-core package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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

vhost: vringh: Fix copy_to_iter return value check

The return value of copy_to_iter can't be negative, check whether the copied length is equal to the requested length instead of checking for negative values.

CVSS Base Scores

version 3.1