CVE-2023-53994

Kernel panic via ionic interrupt-link warning

Published Dec 24, 2025 · Updated Dec 24, 2025

Denial of service in the ionic Ethernet driver in Linux 5.4 through 6.4.4 allows local users to panic kernels configured with panic_on_warn. ionic_link_qcq_interrupts unnecessarily invokes WARN_ON when a queue already carries IONIC_QCQ_F_INTR before clearing the stale interrupt state. Exploitation requires the ionic driver, the interrupt-linking condition, and panic_on_warn=1; the bounded consequence is a kernel panic and service interruption.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the ionic Ethernet driver in Linux 5.4 through 6.4.4 allows local users to panic kernels configured with panic_on_warn. ionic_link_qcq_interrupts unnecessarily invokes WARN_ON when a queue already carries IONIC_QCQ_F_INTR before clearing the stale interrupt state. Exploitation requires the ionic driver, the interrupt-linking condition, and panic_on_warn=1; the bounded consequence is a kernel panic and service interruption.

The record

CVE
CVE-2023-53994
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 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=5.4
  2. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <1417dd787a5e55b410a00a28231b0dcb19172457
  3. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <4c7276a6daf7e13a6dd30b0347b3f2c7df4d40bb
  4. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <abfb2a58a5377ebab717d4362d6180f901b6e5c1
  5. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <daeaad114cb163ec51bcf14326cb7fe37d368459
  6. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <dc470466753ad0dd3a8c48aaefa05a992c119b9c
  7. Affected versionversion=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <f8cc4fd99a325505e15c3da95d6de266efd3d9b5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <1417dd787a5e55b410a00a28231b0dcb19172457; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <4c7276a6daf7e13a6dd30b0347b3f2c7df4d40bb; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <abfb2a58a5377ebab717d4362d6180f901b6e5c1; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <daeaad114cb163ec51bcf14326cb7fe37d368459; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <dc470466753ad0dd3a8c48aaefa05a992c119b9c; version=77ceb68e29ccd25d923b6af59e74ecaf736cc4b7 <f8cc4fd99a325505e15c3da95d6de266efd3d9b5

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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

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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