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Echo: linux: security update to 6.1.153-1

medium Tenable Cloud Security Plugin ID 462445

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: comedi: fix race between polling and
 detaching syzbot reports a use-after-free in comedi in the below link, which is due to comedi gladly
 removing the allocated async area even though poll requests are still active on the wait_queue_head inside
 of it. This can cause a use-after-free when the poll entries are later triggered or removed, as the memory
 for the wait_queue_head has been freed. We need to check there are no tasks queued on any of the
 subdevices' wait queues before allowing the device to be detached by the `COMEDI_DEVCONFIG` ioctl. Tasks
 will read-lock `dev->attach_lock` before adding themselves to the subdevice wait queue, so fix the problem
 in the `COMEDI_DEVCONFIG` ioctl handler by write-locking `dev->attach_lock` before checking that all of
 the subdevices are safe to be deleted. This includes testing for any sleepers on the subdevices' wait
 queues. It remains locked until the device has been detached. This requires the `comedi_device_detach()`
 function to be refactored slightly, moving the bulk of it into new function
 `comedi_device_detach_locked()`. Note that the refactor of `comedi_device_detach()` results in
 `comedi_device_cancel_all()` now being called while `dev->attach_lock` is write-locked, which wasn't the
 case previously, but that does not matter. Thanks to Jens Axboe for diagnosing the problem and co-
 developing this patch. (CVE-2025-38687)

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-2025-38687

Plugin Details

Severity: Medium

ID: 462445

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.15

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2025-38687

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/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: 9/4/2025

Reference Information

CVE: CVE-2025-38687