CVE-2025-39943

critical

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.

References

https://git.kernel.org/stable/c/eb0378dde086363046ed3d7db7f126fc3f76fd70

https://git.kernel.org/stable/c/bdaab5c6538e250a9654127e688ecbbeb6f771d5

https://git.kernel.org/stable/c/8be498fcbd5b07272f560b45981d4b9e5a2ad885

https://git.kernel.org/stable/c/773fddf976d282ef059c36c575ddb81567acd6bc

https://git.kernel.org/stable/c/529b121b00a6ee3c88fb3c01b443b2b81f686d48

https://git.kernel.org/stable/c/5282491fc49d5614ac6ddcd012e5743eecb6a67c

Details

Source: Mitre, NVD

Published: 2025-10-04

Updated: 2025-10-06

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00024