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CVE-2023-53394

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: xsk: Fix crash on regular rq reactivation When the regular rq is reactivated after the XSK socket is closed it could…

Published Sep 18, 2025EPSS 0.14%

Overview

CVE-2023-53394 is a high-severity vulnerability. It was published on September 18, 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/mlx5e: xsk: Fix crash on regular rq reactivation

When the regular rq is reactivated after the XSK socket is closed

it could be reading stale cqes which eventually corrupts the rq.

This leads to no more traffic being received on the regular rq and a

crash on the next close or deactivation of the rq.

Kal Cuttler Conely reported this issue as a crash on the release

path when the xdpsock sample program is stopped (killed) and restarted

in sequence while traffic is running.

This patch flushes all cqes when during the rq flush. The cqe flushing

is done in the reset state of the rq. mlx5e_rq_to_ready code is moved

into the flush function to allow for this.

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/02a84eb2af6bea7871cd34264fb27f141f005fd9Refgit.kernel.org/stable/c/39646d9bcd1a65d2396328026626859a1dab59d7

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53394?

CVE-2023-53394 is a high-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53394?

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-2023-53394?

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-2023-53394?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53394 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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