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CVE-2025-38416

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: NFC: nci: uart: Set tty->disc_data only in success path Setting tty->disc_data before opening the NCI device means we need to c…

Published Jul 25, 2025EPSS 0.23%

Overview

CVE-2025-38416 is a high-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

NFC: nci: uart: Set tty->disc_data only in success path

Setting tty->disc_data before opening the NCI device means we need to

clean it up on error paths. This also opens some short window if device

starts sending data, even before NCIUARTSETDRIVER IOCTL succeeded

(broken hardware?). Close the window by exposing tty->disc_data only on

the success path, when opening of the NCI device and try_module_get()

succeeds.

The code differs in error path in one aspect: tty->disc_data won't be

ever assigned thus NULL-ified. This however should not be relevant

difference, because of "tty->disc_data=NULL" in nci_uart_tty_open().

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/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5Refgit.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9cRefgit.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893Refgit.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87Refgit.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23Refgit.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcbRefgit.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6Refgit.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16feReflists.debian.org/debian-lts-announce/2025/10/msg00007.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38416?

CVE-2025-38416 is a high-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38416?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38416?

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-2025-38416?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38416 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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