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CVE-2025-39760

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: usb: core: config: Prevent OOB read in SS endpoint companion parsing usb_parse_ss_endpoint_companion() checks descriptor type b…

Published Sep 11, 2025CWE-125EPSS 0.18%

Overview

CVE-2025-39760 is a high-severity vulnerability. It was published on September 11, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

usb: core: config: Prevent OOB read in SS endpoint companion parsing

usb_parse_ss_endpoint_companion() checks descriptor type before length,

enabling a potentially odd read outside of the buffer size.

Fix this up by checking the size first before looking at any of the

fields in the descriptor.

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/058ad2b722812708fe90567875704ae36563e33bRefgit.kernel.org/stable/c/4fe6f472f0beef4281e6f03bc38a910a33be663fRefgit.kernel.org/stable/c/5badd56c711e2c8371d1670f9bd486697575423cRefgit.kernel.org/stable/c/5c3097ede7835d3caf6543eb70ff689af4550cd2Refgit.kernel.org/stable/c/9512510cee7d1becdb0e9413fdd3ab783e4e30eeRefgit.kernel.org/stable/c/9843bcb187cb933861f7805022e6873905f669e4Refgit.kernel.org/stable/c/b10e0f868067c6f25bbfabdcf3e1e6432c24ca55Refgit.kernel.org/stable/c/cf16f408364efd8a68f39011a3b073c83a03612dReflists.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-2025-39760?

CVE-2025-39760 is a high-severity vulnerability. It was published on September 11, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-39760?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2025-39760?

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-2025-39760?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-39760 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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