Detections
Analytics

Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 458303

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: netfilter: synproxy: add mutex to
 guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a
 user adds the first iptables target or nftables expression, if done concurrently they can race each other.
 Introduce a mutex to serialize the refcount control blocks access from both frontends. While a per
 namespace mutex might be more efficient, it is not needed for target/expression like SYNPROXY.
 (CVE-2026-53269)

Solution

Update the linux library and its related packages to version 6.1.176-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-53269

Plugin Details

Severity: Medium

ID: 458303

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.04

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-2026-53269

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: 6/25/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-53269