Echo: linux: security update to 6.8.9-1

medium Tenable Cloud Security Plugin ID 455323

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: net/sched: Fix mirred deadlock on
device recursion When the mirred action is used on a classful egress qdisc and a packet is mirrored or
redirected to self we hit a qdisc lock deadlock. See trace below. [..... other info removed for
brevity....] [ 82.890906] [ 82.890906] ============================================ [ 82.890906] WARNING:
possible recursive locking detected [ 82.890906] 6.8.0-05205-g77fadd89fe2d-dirty #213 Tainted: G W [
82.890906] -------------------------------------------- [ 82.890906] ping/418 is trying to acquire lock: [
82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at: __dev_queue_xmit+0x1778/0x3550 [ 82.890906] [
82.890906] but task is already holding lock: [ 82.890906] ffff888006994110 (&sch->q.lock){+.-.}-{3:3}, at:
__dev_queue_xmit+0x1778/0x3550 [ 82.890906] [ 82.890906] other info that might help us debug this: [
82.890906] Possible unsafe locking scenario: [ 82.890906] [ 82.890906] CPU0 [ 82.890906] ---- [ 82.890906]
lock(&sch->q.lock); [ 82.890906] lock(&sch->q.lock); [ 82.890906] [ 82.890906] *** DEADLOCK *** [
82.890906] [..... other info removed for brevity....] Example setup (eth0->eth0) to recreate tc qdisc add
dev eth0 root handle 1: htb default 30 tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \
action mirred egress redirect dev eth0 Another example(eth0->eth1->eth0) to recreate tc qdisc add dev eth0
root handle 1: htb default 30 tc filter add dev eth0 handle 1: protocol ip prio 2 matchall \ action mirred
egress redirect dev eth1 tc qdisc add dev eth1 root handle 1: htb default 30 tc filter add dev eth1 handle
1: protocol ip prio 2 matchall \ action mirred egress redirect dev eth0 We fix this by adding an owner
field (CPU id) to struct Qdisc set after root qdisc is entered. When the softirq enters it a second time,
if the qdisc owner is the same CPU, the packet is dropped to break the loop. (CVE-2024-27010)

Solution

Update the linux library and its related packages to version 6.8.9-1 or later.

Plugin Details

Severity: Medium

ID: 455323

Version: Revision 1.2

Type: Local

Family: Echo Local Security Checks

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: 23.18

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-2024-27010

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: 4/27/2024

Reference Information

CVE: CVE-2024-27010

Detections

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