CVE-2026-89872

Unspecified impact via leaked firmware-node reference

Published Sep 16, 2026 · Updated Sep 16, 2026

A firmware-node reference leak in the Linux kernel allows attackers to cause unspecified impact via successful V4L2 link parsing. v4l2_fwnode_parse_link obtains a remote endpoint with fwnode_graph_get_remote_endpoint but omits fwnode_handle_put on its success path. Published material identifies neither an attacker-controlled route to the parser nor a concrete security consequence beyond unreleased kernel references.

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

A firmware-node reference leak in the Linux kernel allows attackers to cause unspecified impact via successful V4L2 link parsing. v4l2_fwnode_parse_link obtains a remote endpoint with fwnode_graph_get_remote_endpoint but omits fwnode_handle_put on its success path. Published material identifies neither an attacker-controlled route to the parser nor a concrete security consequence beyond unreleased kernel references.

The record

CVE
CVE-2026-89872
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=4.13
  2. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <3ced388b7908270529e5aa6d221840114b6c33bc
  3. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <578c4bfa28bf21458ecdde2fd3fc429475f34c10
  4. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <881aafb139520570fd3390bf9938d7098b7fbb99
  5. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <a6e86efd7f85e519bf48417f41923f8bd51f1597
  6. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <c9b5238d173ee9b94dcaa2b34244ea89c8024feb
  7. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <ccd8d1d80afab8b492a583ae81bfd295835bab2f
  8. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <d92dc4692834e04bc0ef1d0908589852050d1a66
  9. Affected versionversion=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <ef609b3ce456f021320fee2fb7e45094a3ccf232

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <3ced388b7908270529e5aa6d221840114b6c33bc; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <578c4bfa28bf21458ecdde2fd3fc429475f34c10; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <881aafb139520570fd3390bf9938d7098b7fbb99; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <a6e86efd7f85e519bf48417f41923f8bd51f1597; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <c9b5238d173ee9b94dcaa2b34244ea89c8024feb; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <ccd8d1d80afab8b492a583ae81bfd295835bab2f; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <d92dc4692834e04bc0ef1d0908589852050d1a66; version=ca50c197bd9610ea984cfc0dc6855f183cbb46f8 <ef609b3ce456f021320fee2fb7e45094a3ccf232

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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

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Your stack

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