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Echo: linux: security update to 6.1.176-1

medium Tenable Self-Hosted Container Security Plugin ID 458214

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: netlabel: validate unlabeled address
 and mask attribute lengths netlbl_unlabel_addrinfo_get() used the address attribute length to determine
 whether the attribute data could be read as an IPv4 or IPv6 address, but did not independently validate
 the corresponding mask attribute length. A crafted Generic Netlink request could therefore provide a valid
 IPv4/IPv6 address attribute with a shorter mask attribute, which would later be read as a full struct
 in_addr or struct in6_addr. NLA_BINARY policy lengths are maximum lengths by default, so use
 NLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask attributes. This rejects short
 attributes during policy validation and also exposes the exact length requirements through policy
 introspection. (CVE-2026-53238)

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-2026-53238

Plugin Details

Severity: Medium

ID: 458214

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

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-2026-53238

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-2026-53238