CVE-2023-4130: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 5.15, before 5.15.127 (fixed in 5.15.127); from 5.16, before 6.1.46 (fixed in 6.1.46); from 6.2, before 6.4.11 (fixed in 6.4.11); version 6.5 only

Published 2025-08-16. Last modified 2026-08-15.