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CVE-2025-23140

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error After devm_request_irq() fails with error…

Published May 1, 2025EPSS 0.22%

Overview

CVE-2025-23140 is a medium-severity vulnerability. It was published on May 1, 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:

misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error

After devm_request_irq() fails with error in pci_endpoint_test_request_irq(),

the pci_endpoint_test_free_irq_vectors() is called assuming that all IRQs

have been released.

However, some requested IRQs remain unreleased, so there are still

/proc/irq/* entries remaining, and this results in WARN() with the

following message:

remove_proc_entry: removing non-empty directory 'irq/30', leaking at least 'pci-endpoint-test.0'

WARNING: CPU: 0 PID: 202 at fs/proc/generic.c:719 remove_proc_entry +0x190/0x19c

To solve this issue, set the number of remaining IRQs to test->num_irqs,

and release IRQs in advance by calling pci_endpoint_test_release_irq().

[kwilczynski: commit log]

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/0557e70e2aeba8647bf5a950820b67cfb86533dbRefgit.kernel.org/stable/c/54c9f299ad7d7c4be5d271ed12d01a59e95b8907Refgit.kernel.org/stable/c/5a4b7181213268c9b07bef8800905528435db44aRefgit.kernel.org/stable/c/705be96504779e4a333ea042b4779ea941f0ace9Refgit.kernel.org/stable/c/770407f6173f4f39f4e2c1b54422b79ce6c98bdbRefgit.kernel.org/stable/c/9d5118b107b1a2353ed0dff24404aee2e6b7ca0aRefgit.kernel.org/stable/c/e516e187bf32d8decc7c7d0025ae4857cad13c0eRefgit.kernel.org/stable/c/f6cb7828c8e17520d4f5afb416515d3fae1af9a9Reflists.debian.org/debian-lts-announce/2025/05/msg00030.htmlReflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-23140?

CVE-2025-23140 is a medium-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-23140?

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-2025-23140?

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-2025-23140?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-23140 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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