Detections
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Echo: linux: security update to 6.1.159-1

medium Tenable Cloud Security Plugin ID 458146

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: ACPI: video: Fix use-after-free in
 acpi_video_switch_brightness() The switch_brightness_work delayed work accesses device->brightness and
 device->backlight, freed by acpi_video_dev_unregister_backlight() during device removal. If the work
 executes after acpi_video_bus_unregister_backlight() frees these resources, it causes a use-after-free
 when acpi_video_switch_brightness() dereferences device->brightness or device->backlight. Fix this by
 calling cancel_delayed_work_sync() for each device's switch_brightness_work in
 acpi_video_bus_remove_notify_handler() after removing the notify handler that queues the work. This
 ensures the work completes before the memory is freed. [ rjw: Changelog edit ] (CVE-2025-40211)

Solution

Update the linux library and its related packages to version 6.1.159-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-40211

Plugin Details

Severity: Medium

ID: 458146

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.4

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2025-40211

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/21/2025

Vulnerability Publication Date: 11/21/2025

Reference Information

CVE: CVE-2025-40211