CVE-2026-23329

System crash via unsupported firmware-log teardown

Published Mar 25, 2026 · Updated Mar 25, 2026

NULL pointer dereference in Linux Kernel 6.18 allows local users to crash the system by unloading the ixgbe driver in recovery mode. The libie_fwlog_deinit() teardown path unrolls firmware-log state without first confirming that firmware logging is supported and initialized. Exploitation requires local privileges sufficient to unload ixgbe, and the reported consequence is a kernel crash without confidentiality or integrity impact.

CVSS severity5.5
Medium
EPSS probability0.12%
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 allows local users to crash the system by unloading the ixgbe driver in recovery mode. The libie_fwlog_deinit() teardown path unrolls firmware-log state without first confirming that firmware logging is supported and initialized. Exploitation requires local privileges sufficient to unload ixgbe, and the reported consequence is a kernel crash without confidentiality or integrity impact.

The record

CVE
CVE-2026-23329
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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=6.18
  2. Affected versionversion=641585bc978e0a1170ca8f12fbb1468b3874a2db <0138d1cdb19fa49181a5aaba32427f1787cb3935
  3. Affected versionversion=641585bc978e0a1170ca8f12fbb1468b3874a2db <460c56ecbef57684aad1d6af525b89dcd3565701
  4. Affected versionversion=641585bc978e0a1170ca8f12fbb1468b3874a2db <636cc3bd12f499c74eaf5dc9a7d5b832f1bb24ed

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.18; version=641585bc978e0a1170ca8f12fbb1468b3874a2db <0138d1cdb19fa49181a5aaba32427f1787cb3935; version=641585bc978e0a1170ca8f12fbb1468b3874a2db <460c56ecbef57684aad1d6af525b89dcd3565701; version=641585bc978e0a1170ca8f12fbb1468b3874a2db <636cc3bd12f499c74eaf5dc9a7d5b832f1bb24ed

Published CVSS scores

5.5NVDCVSS: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

No sourced classifications are available.

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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