CVE-2026-89503 Affecting kernel-uek-modules-usb package, versions <0:6.12.0-208.112.5.el10uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKMODULESUSB-22166616
  • published3 Nov 2026
  • disclosed11 Sept 2026

Introduced: 11 Sep 2026

CVE-2026-89503  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-modules-usb to version 0:6.12.0-208.112.5.el10uek or higher.
This issue was patched in ELSA-2026-500572.

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:

ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page()

ring_buffer_alloc_read_page() is racy with ring_buffer_subbuf_order_set, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still re-allocate a new reader page and try again.

However, what is more problematic is if the value of subbuf_order changes in the middle of ring_buffer_alloc_read_page(). In that case, bpage->order might not match the actual allocated memory.

Use bpage->order for the allocation to prevent this race.

CVSS Base Scores

version 3.1