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CVE-2023-53802

In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function It is stated that ath9k_htc_rx_msg() eith…

Published Dec 9, 2025EPSS 0.19%

Overview

CVE-2023-53802 is a known-severity vulnerability. It was published on December 9, 2025.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function

It is stated that ath9k_htc_rx_msg() either frees the provided skb or

passes its management to another callback function. However, the skb is

not freed in case there is no another callback function, and Syzkaller was

able to cause a memory leak. Also minor comment fix.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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/564bc2222bf50eb6cdee715a5431bf4dc9f923c1Refgit.kernel.org/stable/c/5a84e51f72580fc70066b03f3dac38421e702a0bRefgit.kernel.org/stable/c/68171c006c8645a3e0293a6c3e6037c6538ac1c5Refgit.kernel.org/stable/c/9b25e3985477ac3f02eca5fc1e0cc6850a3f7e69Refgit.kernel.org/stable/c/b11f95f65cc52ee3a756e6f6a88df37a203e25bdRefgit.kernel.org/stable/c/bbfababb4f899fe1556eac195f9774b6fe675fb6Refgit.kernel.org/stable/c/c0c0614f143b568cd0e9525d53cf12e5dcd11987Refgit.kernel.org/stable/c/ec246dfe006b2a8f36353f7489e4f525114db9a5

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53802?

CVE-2023-53802 is a known-severity vulnerability. It was published on December 9, 2025.

How severe is CVE-2023-53802?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2023-53802?

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-2023-53802?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53802 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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