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Echo: linux: security update to 6.1.170-1

medium Tenable Cloud Security Plugin ID 460279

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: xfrm: clear trailing padding in
 build_polexpire() build_expire() clears the trailing padding bytes of struct xfrm_user_expire after
 setting the hard field via memset_after(), but the analogous function build_polexpire() does not do this
 for struct xfrm_user_polexpire. The padding bytes after the __u8 hard field are left uninitialized from
 the heap allocation, and are then sent to userspace via netlink multicast to XFRMNLGRP_EXPIRE listeners,
 leaking kernel heap memory contents. Add the missing memset_after() call, matching build_expire().
 (CVE-2026-31664)

Solution

Update the linux library and its related packages to version 6.1.170-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-31664

Plugin Details

Severity: Medium

ID: 460279

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

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-2026-31664

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: 5/1/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-31664