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CVE-2025-38405

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-1…

Published Jul 25, 2025CWE-401EPSS 0.40%

Overview

CVE-2025-38405 is a high-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. 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:

nvmet: fix memory leak of bio integrity

If nvmet receives commands with metadata there is a continuous memory

leak of kmalloc-128 slab or more precisely bio->bi_integrity.

Since commit bf4c89fc8797 ("block: don't call bio_uninit from bio_endio")

each user of bio_init has to use bio_uninit as well. Otherwise the bio

integrity is not getting free. Nvmet uses bio_init for inline bios.

Uninit the inline bio to complete deallocation of integrity in bio.

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/190f4c2c863af7cc5bb354b70e0805f06419c038Refgit.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508Refgit.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38405?

CVE-2025-38405 is a high-severity vulnerability. It was published on July 25, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-38405?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-38405?

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-2025-38405?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38405 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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