Detections
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Echo: linux: security update to 6.1.176-1

medium Tenable Cloud Security Plugin ID 458875

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: Bluetooth: fix memory leak in error
 path of hci_alloc_dev() Early failures in Bluetooth HCI UART configuration leak SRCU percpu memory. When
 device initialization fails before hci_register_dev() completes, the HCI_UNREGISTER flag is never set. As
 a result, when the device reference count reaches zero, bt_host_release() evaluates this flag as false and
 falls back to a direct kfree(hdev). Because hci_release_dev() is bypassed, the SRCU struct initialized
 early in hci_alloc_dev() is never cleaned up, resulting in a leak of percpu memory. Fix the leak by
 explicitly calling cleanup_srcu_struct() in the fallback (unregistered) branch of bt_host_release() before
 freeing the device. (CVE-2026-53252)

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-2026-53252

Plugin Details

Severity: Medium

ID: 458875

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

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-2026-53252

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: 6/25/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-53252