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CVE-2023-4130

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea() There are multiple smb2_ea_info buffers in FILE_FULL_EA_I…

Published Aug 16, 2025EPSS 0.51%

Overview

CVE-2023-4130 is a high-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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

ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()

There are multiple smb2_ea_info buffers in FILE_FULL_EA_INFORMATION request

from client. ksmbd find next smb2_ea_info using ->NextEntryOffset of

current smb2_ea_info. ksmbd need to validate buffer length Before

accessing the next ea. ksmbd should check buffer length using buf_len,

not next variable. next is the start offset of current ea that got from

previous ea.

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/4bf629262f9118ee91b1c3a518ebf2b3bcb22180Refgit.kernel.org/stable/c/79ed288cef201f1f212dfb934bcaac75572fb8f6Refgit.kernel.org/stable/c/aeb974907642be095e38ecb1a400ca583958b2b0Refgit.kernel.org/stable/c/f339d76a3a972601d0738b881b099d49ebbdc3a2

How CyberStrike helps

Frequently asked questions

What is CVE-2023-4130?

CVE-2023-4130 is a high-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2023-4130?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-4130?

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-2023-4130?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-4130 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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