CVE-2025-39810 Affecting kernel-uek-debug-modules package, versions <0:6.12.0-105.51.5.el9uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEKDEBUGMODULES-13869214
  • published10 Nov 2025
  • disclosed16 Sept 2025

Introduced: 16 Sep 2025

CVE-2025-39810  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek-debug-modules to version 0:6.12.0-105.51.5.el9uek or higher.
This issue was patched in ELSA-2025-25754.

NVD Description

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

bnxt_en: Fix memory corruption when FW resources change during ifdown

bnxt_set_dflt_rings() assumes that it is always called before any TC has been created. So it doesn't take bp->num_tc into account and assumes that it is always 0 or 1.

In the FW resource or capability change scenario, the FW will return flags in bnxt_hwrm_if_change() that will cause the driver to reinitialize and call bnxt_cancel_reservations(). This will lead to bnxt_init_dflt_ring_mode() calling bnxt_set_dflt_rings() and bp->num_tc may be greater than 1. This will cause bp->tx_ring[] to be sized too small and cause memory corruption in bnxt_alloc_cp_rings().

Fix it by properly scaling the TX rings by bp->num_tc in the code paths mentioned above. Add 2 helper functions to determine bp->tx_nr_rings and bp->tx_nr_rings_per_tc.

CVSS Base Scores

version 3.1