CVE-2026-74585 Affecting kernel-uek64k-devel package, versions <0:6.12.0-206.104.3.3.el9uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.22% (12th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEK64KDEVEL-19544676
  • published5 Sept 2026
  • disclosed22 Aug 2026

Introduced: 22 Aug 2026

CVE-2026-74585  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek64k-devel to version 0:6.12.0-206.104.3.3.el9uek or higher.
This issue was patched in ELSA-2026-500248.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek64k-devel package and not the kernel-uek64k-devel 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:

thunderbolt: Bound the DROM dual link port number before indexing sw->ports

tb_drom_parse_entry_port() validates the device-supplied header->index against sw->config.max_port_number before indexing sw->ports[], but the sibling field entry->dual_link_port_nr -- a 6-bit value also read from the DROM -- indexes the same array with no such check. A malicious or malformed Thunderbolt device can set dual_link_port_nr beyond the allocated sw->ports[] (max_port_number + 1 entries), producing an out-of-bounds tb_port pointer that is stored and later dereferenced.

Reject a port entry whose dual_link_port_nr exceeds max_port_number, the same bound already applied to header->index.

CVSS Base Scores

version 3.1