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Echo: linux: security update to 6.1.162-1

medium Tenable Self-Hosted Container Security Plugin ID 457867

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: crypto: qat - flush misc workqueue
 during device shutdown Repeated loading and unloading of a device specific QAT driver, for example
 qat_4xxx, in a tight loop can lead to a crash due to a use-after-free scenario. This occurs when a power
 management (PM) interrupt triggers just before the device-specific driver (e.g., qat_4xxx.ko) is unloaded,
 while the core driver (intel_qat.ko) remains loaded. Since the driver uses a shared workqueue
 (`qat_misc_wq`) across all devices and owned by intel_qat.ko, a deferred routine from the device-specific
 driver may still be pending in the queue. If this routine executes after the driver is unloaded, it can
 dereference freed memory, resulting in a page fault and kernel crash like the following: BUG: unable to
 handle page fault for address: ffa000002e50a01c #PF: supervisor read access in kernel mode RIP:
 0010:pm_bh_handler+0x1d2/0x250 [intel_qat] Call Trace: pm_bh_handler+0x1d2/0x250 [intel_qat]
 process_one_work+0x171/0x340 worker_thread+0x277/0x3a0 kthread+0xf0/0x120 ret_from_fork+0x2d/0x50 To
 prevent this, flush the misc workqueue during device shutdown to ensure that all pending work items are
 completed before the driver is unloaded. Note: This approach may slightly increase shutdown latency if the
 workqueue contains jobs from other devices, but it ensures correctness and stability. (CVE-2025-39721)

Solution

Update the linux library and its related packages to version 6.1.162-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-39721

Plugin Details

Severity: Medium

ID: 457867

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.29

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-2025-39721

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: 9/5/2025

Reference Information

CVE: CVE-2025-39721