What is CVE-2023-4130?

CVE-2023-4130 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2025-08-16.

How severe is CVE-2023-4130?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2023-4130 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

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 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.

EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Affected products

Linux — versions 6.4.11, 5.15.127, 0626e6641f6b467447c81dd7678a69c66f7746cf
Linux Linux_kernel — versions 6.5

Public proof-of-concept exploits

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2023-4130?: CVE-2023-4130 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2025-08-16.
How severe is CVE-2023-4130?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2023-4130 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.