Detections
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Echo: linux: security update to 6.1.176-1

high Tenable Cloud Security Plugin ID 455269

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: batman-adv: fix tp_meter counter
 underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic
 counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter
 can underflow to -1. Since the sender logic treats any non-zero value as "still sending", a negative value
 causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is
 removed while the zombie thread is still active. Fix this by using atomic_xchg() to ensure the counter
 only transitions from 1 to 0 once. [sven: added missing change in batadv_tp_send] (CVE-2026-52919)

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-2026-52919

Plugin Details

Severity: High

ID: 455269

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: Medium

Score: 4.9

Percentile: 58.14

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-52919

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 6/3/2026

Reference Information

CVE: CVE-2026-52919