CVE-2023-4130
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Linux Kernel
PublishedAug 16, 2025
First seenAug 16, 2025
How to fix
Update
- linux linux_kernel5.15.127, 6.1.46, 6.4.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15 ≤ v < 5.15.127, 5.16 ≤ v < 6.1.46, 6.2 ≤ v < 6.4.11, 6.5 | 5.15.127, 6.1.46, 6.4.11 |
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