CVE-2026-89941 Affecting kernel-uek-modules-usb package, versions <0:6.12.0-207.111.5.1.el10uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKMODULESUSB-20583223
  • published8 Oct 2026
  • disclosed16 Sept 2026

Introduced: 16 Sep 2026

CVE-2026-89941  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-modules-usb to version 0:6.12.0-207.111.5.1.el10uek or higher.
This issue was patched in ELSA-2026-500374.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-modules-usb package and not the kernel-uek-modules-usb 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:

iio: buffer: Make IIO DMA fence release RCU-safe

The dma_fence documentation states that if a custom release implementation is provided, the dma_fence object must be freed in an RCU-safe way. The current iio_dma_fence implementation uses kfree(), which might result in a use-after-free.

Remove the custom release implementation. This makes the DMA fence core fall back to dma_fence_free(), which calls kfree_rcu() on the fence. This requires that the fence be the first member of struct iio_dma_fence.

Using the default release method for extended DMA fence structures is a common pattern.

CVSS Base Scores

version 3.1