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CVE-2025-38533

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure contained two DMA address fields: 'dma' and 'page_dma'.

Published Aug 16, 2025CWE-787EPSS 0.31%

Overview

CVE-2025-38533 is a critical-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

net: libwx: fix the using of Rx buffer DMA

The wx_rx_buffer structure contained two DMA address fields: 'dma' and

'page_dma'. However, only 'page_dma' was actually initialized and used

to program the Rx descriptor. But 'dma' was uninitialized and used in

some paths.

This could lead to undefined behavior, including DMA errors or

use-after-free, if the uninitialized 'dma' was used. Althrough such

error has not yet occurred, it is worth fixing in the code.

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.

References

Refgit.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5Refgit.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367dRefgit.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0Refgit.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38533?

CVE-2025-38533 is a critical-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-38533?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-38533?

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-2025-38533?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38533 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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