CVE-2025-39933

MEDIUM

Linux Kernel 4.16-6.16.8 - Unauthenticated Remote Code Execution via SMB Client Data Length Validation

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: let recv_done verify data_offset, data_length and remaining_data_length This is inspired by the related server fixes.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/581fb78e0388b78911b0c920e4073737090c8b5f

Patch

https://git.kernel.org/stable/c/f57e53ea252363234f86674db475839e5b87102e

Scores

CVSS v3 5.5

EPSS 0.0012

EPSS Percentile 2.2%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (9)

linux/Kernel 4.16.0 - 6.16.9linux

Linux/Linux < 4.16

Linux/Linux 4.16

Linux/Linux 6.16.9 - 6.16.*

Linux/Linux 6.17

Linux/Linux f198186aa9bbd60fae7a2061f4feec614d880299 - 581fb78e0388b78911b0c920e4073737090c8b5f

Linux/Linux f198186aa9bbd60fae7a2061f4feec614d880299 - f57e53ea252363234f86674db475839e5b87102e

linux/linux_kernel 6.17 rc1 (6 CPE variants)

linux/linux_kernel 4.16 - 6.16.9

Published Oct 04, 2025

Tracked Since Feb 18, 2026