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Echo: linux: security update to 6.1.162-1

high Tenable Cloud Security Plugin ID 460824

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: dmaengine: idxd: Remove improper
 idxd_free The call to idxd_free() introduces a duplicate put_device() leading to a reference count
 underflow: refcount_t: underflow; use-after-free. WARNING: CPU: 15 PID: 4428 at lib/refcount.c:28
 refcount_warn_saturate+0xbe/0x110 ... Call Trace: <TASK> idxd_remove+0xe4/0x120 [idxd]
 pci_device_remove+0x3f/0xb0 device_release_driver_internal+0x197/0x200 driver_detach+0x48/0x90
 bus_remove_driver+0x74/0xf0 pci_unregister_driver+0x2e/0xb0 idxd_exit_module+0x34/0x7a0 [idxd]
 __do_sys_delete_module.constprop.0+0x183/0x280 do_syscall_64+0x54/0xd70
 entry_SYSCALL_64_after_hwframe+0x76/0x7e The idxd_unregister_devices() which is invoked at the very
 beginning of idxd_remove(), already takes care of the necessary put_device() through the following call
 path: idxd_unregister_devices() -> device_unregister() -> put_device() In addition, when
 CONFIG_DEBUG_KOBJECT_RELEASE is enabled, put_device() may trigger asynchronous cleanup via
 schedule_delayed_work(). If idxd_free() is called immediately after, it can result in a use-after-free.
 Remove the improper idxd_free() to avoid both the refcount underflow and potential memory corruption
 during module unload. (CVE-2025-39871)

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-2025-39871

Plugin Details

Severity: High

ID: 460824

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.93

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-2025-39871

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: 9/30/2025

Vulnerability Publication Date: 9/23/2025

Reference Information

CVE: CVE-2025-39871