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Echo: linux: security update to 6.1.133-1

medium Tenable Self-Hosted Container Security Plugin ID 464894

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: drm/hyperv: Fix address space leak
 when Hyper-V DRM device is removed When a Hyper-V DRM device is probed, the driver allocates MMIO space
 for the vram, and maps it cacheable. If the device removed, or in the error path for device probing, the
 MMIO space is released but no unmap is done. Consequently the kernel address space for the mapping is
 leaked. Fix this by adding iounmap() calls in the device removal path, and in the error path during device
 probing. (CVE-2025-21978)

Solution

Update the linux library and its related packages to version 6.1.133-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-21978

Plugin Details

Severity: Medium

ID: 464894

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-21978

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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: 1/28/2026

Vulnerability Publication Date: 4/1/2025

Reference Information

CVE: CVE-2025-21978