CVE-2025-40307 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% (7th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKDEBUGMODULESWIRELESS-14951872
  • published15 Jan 2026
  • disclosed8 Dec 2025

Introduced: 8 Dec 2025

CVE-2025-40307  (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:

exfat: validate cluster allocation bits of the allocation bitmap

syzbot created an exfat image with cluster bits not set for the allocation bitmap. exfat-fs reads and uses the allocation bitmap without checking this. The problem is that if the start cluster of the allocation bitmap is 6, cluster 6 can be allocated when creating a directory with mkdir. exfat zeros out this cluster in exfat_mkdir, which can delete existing entries. This can reallocate the allocated entries. In addition, the allocation bitmap is also zeroed out, so cluster 6 can be reallocated. This patch adds exfat_test_bitmap_range to validate that clusters used for the allocation bitmap are correctly marked as in-use.

CVSS Base Scores

version 3.1