CVE-2026-43422

Rejected by the assigning authority

Published May 8, 2026 · Updated May 8, 2026

The Linux kernel CNA rejected CVE-2026-43422, so the prior Linux Kernel legacy NCM null-dereference claim is no longer valid. The current record removes the previously published affected versions, patch references, weakness, and CVSS assessment rather than identifying an exploitable flaw. Detection or triage against the withdrawn ranges would misclassify kernels because rejected CVE records should no longer be used.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

The Linux kernel CNA rejected CVE-2026-43422, so the prior Linux Kernel legacy NCM null-dereference claim is no longer valid. The current record removes the previously published affected versions, patch references, weakness, and CVSS assessment rather than identifying an exploitable flaw. Detection or triage against the withdrawn ranges would misclassify kernels because rejected CVE records should no longer be used.

The record

CVE
CVE-2026-43422
Published
May 8, 2026
Updated
May 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=188338c1827842f898761a939669cf345bdf07e2 <b23e86a3a15803c3dcb24701285f73e65099fdf9
  2. Affected versionversion=56a512a9b4107079f68701e7d55da8507eb963d9 <fde0634ad9856b3943a2d1a8cc8de174a63ac840
  3. Affected versionversion=6.18.17 <6.18.19
  4. Affected versionversion=6.19.7 <6.19.9
  5. Affected versionversion=b62076e780a2121903ecf9ffdfb89c64647cb7da <be5738d19bed244ede84da45bc45395bcb1d99e0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=188338c1827842f898761a939669cf345bdf07e2 <b23e86a3a15803c3dcb24701285f73e65099fdf9; version=56a512a9b4107079f68701e7d55da8507eb963d9 <fde0634ad9856b3943a2d1a8cc8de174a63ac840; version=6.18.17 <6.18.19; version=6.19.7 <6.19.9; version=b62076e780a2121903ecf9ffdfb89c64647cb7da <be5738d19bed244ede84da45bc45395bcb1d99e0

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
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

See the directory against your own environment.

Your stack

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