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Echo: linux: security update to 6.3.7-1

medium Tenable Self-Hosted Container Security Plugin ID 458747

Description

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

 - In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a
 memory access check in the wrong place. This could lead to local escalation of privilege with System
 execution privileges needed. User interaction is not needed for exploitation. (CVE-2023-21264)

Solution

Update the linux library and its related packages to version 6.3.7-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2023-21264

Plugin Details

Severity: Medium

ID: 458747

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.58

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2023-21264

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/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: 9/15/2025

Vulnerability Publication Date: 8/14/2023

Reference Information

CVE: CVE-2023-21264