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CVE-2025-38647

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi The following assertion is triggered on the rtw89 driver st…

Published Aug 22, 2025EPSS 0.14%

Overview

CVE-2025-38647 is a medium-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: sar: drop lockdep assertion in rtw89_set_sar_from_acpi

The following assertion is triggered on the rtw89 driver startup. It

looks meaningless to hold wiphy lock on the early init stage so drop the

assertion.

WARNING: CPU: 7 PID: 629 at drivers/net/wireless/realtek/rtw89/sar.c:502 rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]

CPU: 7 UID: 0 PID: 629 Comm: (udev-worker) Not tainted 6.15.0+ #29 PREEMPT(lazy)

Hardware name: LENOVO 21D0/LNVNB161216, BIOS J6CN50WW 09/27/2024

RIP: 0010:rtw89_set_sar_from_acpi+0x365/0x4d0 [rtw89_core]

Call Trace:

<TASK>

rtw89_sar_init+0x68/0x2c0 [rtw89_core]

rtw89_core_init+0x188e/0x1e50 [rtw89_core]

rtw89_pci_probe+0x530/0xb50 [rtw89_pci]

local_pci_probe+0xd9/0x190

pci_call_probe+0x183/0x540

pci_device_probe+0x171/0x2c0

really_probe+0x1e1/0x890

__driver_probe_device+0x18c/0x390

driver_probe_device+0x4a/0x120

__driver_attach+0x1a0/0x530

bus_for_ea

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Frequently asked questions

What is CVE-2025-38647?

CVE-2025-38647 is a medium-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38647?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38647?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-38647?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38647 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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