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Vulnerabilities

Vulnerability · CVE-2023-4130

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

Published Aug 16, 2025 · catalog updated Aug 15, 2026 · Linux Linux

Check if you run it

No confirmed exploitation is on record for CVE-2023-4130. EPSS is 0.51%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.51%
Remediation
Version ranges on file
Affected products
vendor Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f339d76a3a972601d0738b881b099d49ebbdc3a2

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f339d76a3a972601d0738b881b099d49ebbdc3a2e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f339d76a3a972601d0738b881b099d49ebbdc3a2

How to fix CVE-2023-4130

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-4130. EPSS is 0.51%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f339d76a3a972601d0738b881b099d49ebbdc3a2 e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f339d76a3a972601d0738b881b099d49ebbdc3a2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 16, 2025 · EUVD

    Detected

    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 le

  2. Aug 15, 2026 · EUVD

    Updated

    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 le

Sources

  • CVE.orgVulnerability recordCVE-2023-4130

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-4130

    30-day exploitation probability 0.51%

    first.org
  • EUVDVulnerability recordEUVD-2023-54012

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.