Detections
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Echo: linux: security update to 6.1.153-1

high Tenable Cloud Security Plugin ID 455215

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: KVM: x86: use array_index_nospec with
 indices that come from guest min and dest_id are guest-controlled indices. Using array_index_nospec()
 after the bounds checks clamps these values to mitigate speculative execution side-channels.
 (CVE-2025-39823)

Solution

Update the linux library and its related packages to version 6.1.153-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-39823

Plugin Details

Severity: High

ID: 455215

Version: Revision 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.95

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2025-39823

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 9/17/2025

Vulnerability Publication Date: 9/15/2025

Reference Information

CVE: CVE-2025-39823