CVE-2026-23117

Local service interruption via stale control queues

Published Feb 14, 2026 · Updated Feb 14, 2026

NULL pointer dereference in Linux Kernel 6.18.2 through 6.18.7 allows local users to interrupt service during ice driver removal. ice_devlink_reinit_down omits ice_deinit_hw, leaving control queues initialized so ice_devlink_reinit_up fails with EBUSY and ice_unload later dereferences a NULL pointer. Reachability requires a failed devlink reload followed by removal of the ice driver; the reported consequence is availability loss without data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux Kernel 6.18.2 through 6.18.7 allows local users to interrupt service during ice driver removal. ice_devlink_reinit_down omits ice_deinit_hw, leaving control queues initialized so ice_devlink_reinit_up fails with EBUSY and ice_unload later dereferences a NULL pointer. Reachability requires a failed devlink reload followed by removal of the ice driver; the reported consequence is availability loss without data disclosure or modification.

The record

CVE
CVE-2026-23117
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2026Record 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=1390b8b3d2bef9bfbb852fc735430798bfca36e7 <42fb5f3deb582cb96440e4683745017dbabb83d6
  2. Affected versionversion=6.18.2 <6.18.8
  3. Affected versionversion=c91eee346089e4d287d5a111719e57cac605275e <a3d99e2fbf01446d31a0d0dfc46444e915a1f6d4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1390b8b3d2bef9bfbb852fc735430798bfca36e7 <42fb5f3deb582cb96440e4683745017dbabb83d6; version=6.18.2 <6.18.8; version=c91eee346089e4d287d5a111719e57cac605275e <a3d99e2fbf01446d31a0d0dfc46444e915a1f6d4

Published CVSS scores

5.5NIST NVDCVSS: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

CWE-476NULL Pointer Dereference
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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