Detections
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Echo: linux: security update to 6.1.147-1

medium Tenable Cloud Security Plugin ID 464012

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: rseq: Fix segfault on registration
 when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to
 registration, however this is not currently enforced by the kernel. This can result in a segfault on
 return to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq_cs. The
 correct solution to this would be to fail the rseq registration when the rseq_cs field is non-zero.
 However, some older versions of glibc will reuse the rseq area of previous threads without clearing the
 rseq_cs field and will also terminate the process if the rseq registration fails in a secondary thread.
 This wasn't caught in testing because in this case the leftover rseq_cs does point to a valid struct
 rseq_cs. What we can do is clear the rseq_cs field on registration when it's non-zero which will prevent
 segfaults on registration and won't break the glibc versions that reuse rseq areas on thread creation.
 (CVE-2025-38067)

Solution

Update the linux library and its related packages to version 6.1.147-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-38067

Plugin Details

Severity: Medium

ID: 464012

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.49

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-2025-38067

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: 9/15/2025

Vulnerability Publication Date: 9/15/2025

Reference Information

CVE: CVE-2025-38067