CVE-2025-40337 Affecting kernel-uek-debug-modules-wireless package, versions <0:6.12.0-107.59.3.2.el10uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKDEBUGMODULESWIRELESS-14951752
  • published15 Jan 2026
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

CVE-2025-40337  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-debug-modules-wireless to version 0:6.12.0-107.59.3.2.el10uek or higher.
This issue was patched in ELSA-2026-50006.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-modules-wireless package and not the kernel-uek-debug-modules-wireless package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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

net: stmmac: Correctly handle Rx checksum offload errors

The stmmac_rx function would previously set skb->ip_summed to CHECKSUM_UNNECESSARY if hardware checksum offload (CoE) was enabled and the packet was of a known IP ethertype.

However, this logic failed to check if the hardware had actually reported a checksum error. The hardware status, indicating a header or payload checksum failure, was being ignored at this stage. This could cause corrupt packets to be passed up the network stack as valid.

This patch corrects the logic by checking the csum_none status flag, which is set when the hardware reports a checksum error. If this flag is set, skb->ip_summed is now correctly set to CHECKSUM_NONE, ensuring the kernel's network stack will perform its own validation and properly handle the corrupt packet.

CVSS Base Scores

version 3.1