CVE-2025-68320Network attack vector

Service interruption via atomic-context mutex acquisition

Published Dec 16, 2025 · Updated Dec 16, 2025

Improper locking in the Linux kernel lan966x Ethernet driver allows remote attackers to cause a service interrupt through network-triggered statistics reads. The lan966x_stats_get path acquires a sleeping mutex while running in atomic context during network-device statistics collection. Reachability requires a Linux system using Microchip LAN966x Ethernet hardware; the published SSH-triggered trace records a kernel warning rather than a demonstrated crash.

CVSS severity7.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux kernel lan966x Ethernet driver allows remote attackers to cause a service interrupt through network-triggered statistics reads. The lan966x_stats_get path acquires a sleeping mutex while running in atomic context during network-device statistics collection. Reachability requires a Linux system using Microchip LAN966x Ethernet hardware; the published SSH-triggered trace records a kernel warning rather than a demonstrated crash.

The record

CVE
CVE-2025-68320
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <0216721ce71252f60d89af49c8dff613358058d3
  2. Affected versionversion=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <3ac743c60ec502163c435712d527eeced8d83348
  3. Affected versionversion=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <5a5d2f7727752b64d13263eacd9f8d08a322e662
  4. Affected versionversion=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <c8ab03aa5bd9fd8bfe5d9552d8605826759fdd4d
  5. Affected versionversion=5.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <0216721ce71252f60d89af49c8dff613358058d3; version=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <3ac743c60ec502163c435712d527eeced8d83348; version=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <5a5d2f7727752b64d13263eacd9f8d08a322e662; version=12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007 <c8ab03aa5bd9fd8bfe5d9552d8605826759fdd4d; version=5.17

Published CVSS scores

7.5LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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