CVE-2023-54166

Kernel panic via concurrent igc queue teardown

Published Dec 30, 2025 · Updated Dec 30, 2025

Race condition in the Linux kernel igc driver allows local users to cause a kernel panic during transmit-queue timeout handling. igc_tx_timeout can reset the adapter while igc_reinit_locked and igc_clean_tx_irq concurrently tear down or complete transmission without first disabling TX ring hardware queues. Triggering requires an Intel igc network device, heavy traffic, a transmit timeout, and precise overlap with interface reinitialization; the resulting fatal interrupt exception stops the host.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel igc driver allows local users to cause a kernel panic during transmit-queue timeout handling. igc_tx_timeout can reset the adapter while igc_reinit_locked and igc_clean_tx_irq concurrently tear down or complete transmission without first disabling TX ring hardware queues. Triggering requires an Intel igc network device, heavy traffic, a transmit timeout, and precise overlap with interface reinitialization; the resulting fatal interrupt exception stops the host.

The record

CVE
CVE-2023-54166
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=48d6d8f2f6096ef51bd193e2a2fb59cbbc350599 <feba294c454a51bb1e80dd2ff038e335f07ae481
  2. Affected versionversion=5f9c656ab2c4c36f3b85819c7a9a8bec5711cfb5 <c09df09241fdd6aa5b94a5243369662a13ec608a
  3. Affected versionversion=6.2
  4. Affected versionversion=9b275176270efd18f2f4e328b32be1bad34c4c0d <c12554d97fcd954d5c66bcd016586732cf240d0b
  5. Affected versionversion=9b275176270efd18f2f4e328b32be1bad34c4c0d <d4a7ce642100765119a872d4aba1bf63e3a22c8a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=48d6d8f2f6096ef51bd193e2a2fb59cbbc350599 <feba294c454a51bb1e80dd2ff038e335f07ae481; version=5f9c656ab2c4c36f3b85819c7a9a8bec5711cfb5 <c09df09241fdd6aa5b94a5243369662a13ec608a; version=6.2; version=9b275176270efd18f2f4e328b32be1bad34c4c0d <c12554d97fcd954d5c66bcd016586732cf240d0b; version=9b275176270efd18f2f4e328b32be1bad34c4c0d <d4a7ce642100765119a872d4aba1bf63e3a22c8a

Published CVSS scores

4.7Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8CVE.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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