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Echo: linux: security update to 6.1.153-1

medium Tenable Self-Hosted Container Security Plugin ID 455578

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: ax25: properly unshare skbs in
 ax25_kiss_rcv() Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d ("net:
 introduce per netns packet chains"). skb->dev becomes NULL and we crash in __netif_receive_skb_core().
 Before above commit, different kind of bugs or corruptions could happen without a major crash. But the
 root cause is that ax25_kiss_rcv() can queue/mangle input skb without checking if this skb is shared or
 not. Many thanks to Bernard Pidoux for his help, diagnosis and tests. We had a similar issue years ago
 fixed with commit 7aaed57c5c28 ("phonet: properly unshare skbs in phonet_rcv()"). (CVE-2025-39848)

Solution

Update the linux library and its related packages to version 6.1.153-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-39848

Plugin Details

Severity: Medium

ID: 455578

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.15

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-2025-39848

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: 9/20/2025

Vulnerability Publication Date: 9/19/2025

Reference Information

CVE: CVE-2025-39848