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CVE-2023-53218

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Make it so that a waiting process can be aborted When sendmsg() creates an rxrpc call, it queues it to wait for a connec…

Published Sep 15, 2025EPSS 0.17%

Overview

CVE-2023-53218 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:

rxrpc: Make it so that a waiting process can be aborted

When sendmsg() creates an rxrpc call, it queues it to wait for a connection

and channel to be assigned and then waits before it can start shovelling

data as the encrypted DATA packet content includes a summary of the

connection parameters.

However, sendmsg() may get interrupted before a connection gets assigned

and further sendmsg() calls will fail with EBUSY until an assignment is

made.

Fix this so that the call can at least be aborted without failing on

EBUSY. We have to be careful here as sendmsg() mustn't be allowed to start

the call timer if the call doesn't yet have a connection assigned as an

oops may follow shortly thereafter.

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/0eb362d254814ce04848730bf32e75b8ee1a4d6cRefgit.kernel.org/stable/c/7161cf61c64e9e9413d790f2fa2b9dada71a2249Refgit.kernel.org/stable/c/876d96faacbc407daf4978d7ec95051b68f5344a

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53218?

CVE-2023-53218 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-2023-53218?

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-2023-53218?

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-2023-53218?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53218 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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