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CVE-2025-21715

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: davicom: fix UAF in dm9000_drv_remove dm is netdev private data and it cannot be used after free_netdev() call.

Published Feb 27, 2025CWE-416EPSS 0.24%

Overview

CVE-2025-21715 is a high-severity vulnerability. It was published on February 27, 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:

net: davicom: fix UAF in dm9000_drv_remove

dm is netdev private data and it cannot be

used after free_netdev() call. Using dm after free_netdev()

can cause UAF bug. Fix it by moving free_netdev() at the end of the

function.

This is similar to the issue fixed in commit

ad297cd2db89 ("net: qcom/emac: fix UAF in emac_remove").

This bug is detected by our static analysis tool.

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/19e65c45a1507a1a2926649d2db3583ed9d55fd9Refgit.kernel.org/stable/c/2013c95df6752d9c88221d0f0f37b6f197969390Refgit.kernel.org/stable/c/5a54367a7c2378c65aaa4d3cfd952f26adef7aa7Refgit.kernel.org/stable/c/7d7d201eb3b766abe590ac0dda7a508b7db3e357Refgit.kernel.org/stable/c/a53cb72043443ac787ec0b5fa17bb3f8ff3d462bRefgit.kernel.org/stable/c/c411f9a5fdc9158e8f7c57eac961d3df3eb4d8caRefgit.kernel.org/stable/c/c94ab07edc2843e2f3d46dbd82e5c681503aaadfRefgit.kernel.org/stable/c/db79e982c5f9e39ab710cbce55b05f2f5e6f1ca9Reflists.debian.org/debian-lts-announce/2025/03/msg00028.htmlReflists.debian.org/debian-lts-announce/2025/05/msg00030.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21715?

CVE-2025-21715 is a high-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-21715?

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-2025-21715?

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-2025-21715?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21715 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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