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CVE-2023-53153

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Fix use after free for wext Key information in wext.connect is not reset on (re)connect and can hold data from…

Published Sep 15, 2025CWE-416EPSS 0.16%

Overview

CVE-2023-53153 is a high-severity vulnerability. It was published on September 15, 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:

wifi: cfg80211: Fix use after free for wext

Key information in wext.connect is not reset on (re)connect and can hold

data from a previous connection.

Reset key data to avoid that drivers or mac80211 incorrectly detect a

WEP connection request and access the freed or already reused memory.

Additionally optimize cfg80211_sme_connect() and avoid an useless

schedule of conn_work.

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/015b8cc5e7c4d7bb671f1984d7b7338c310b185bRefgit.kernel.org/stable/c/22dfb21bf1cd876616d45cda1bc6daa89eec6747Refgit.kernel.org/stable/c/2cfe78619b0de6d2da773978bc2d22797212eaa7Refgit.kernel.org/stable/c/66af4a2ab1d65d556d638cb9555a3b823c2557a9Refgit.kernel.org/stable/c/6f1959c17d4cb5b74af6fc31dc787e1dc3e4f6e2Refgit.kernel.org/stable/c/a2a92b3e9d8e03ee3f9ee407fc46a9b4bd02d8b6Refgit.kernel.org/stable/c/f4b6a138efb8a32507b8946104e32cb926308da7Refgit.kernel.org/stable/c/fd081afd21eb35b968b0330700c43ec94986e1c4

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53153?

CVE-2023-53153 is a high-severity vulnerability. It was published on September 15, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53153?

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-2023-53153?

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-2023-53153?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53153 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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