CVE-2026-98619Hinoki check available

Kernel warnings via unlocked offline self-tests

Published Oct 18, 2026 · Updated Oct 18, 2026

Missing locking in Linux 7.2 ethtool allows local users to trigger kernel warnings through offline network-interface self-tests. ETHTOOL_TEST invokes fbnic or bnxt teardown and reopening with only the device-instance lock, omitting the required rtnl_lock. Invocation requires CAP_NET_ADMIN and an affected network device; documented results are RCU and RTNL warnings, with no demonstrated crash or privilege escalation.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing locking in Linux 7.2 ethtool allows local users to trigger kernel warnings through offline network-interface self-tests. ETHTOOL_TEST invokes fbnic or bnxt teardown and reopening with only the device-instance lock, omitting the required rtnl_lock. Invocation requires CAP_NET_ADMIN and an affected network device; documented results are RCU and RTNL warnings, with no demonstrated crash or privilege escalation.

The record

CVE
CVE-2026-98619
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 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=7.2
  2. Affected versionversion=f994752b11273ded7ec6b49ae5c1d319eef21743 <1b82958f3f035df5ccaab5430a2302f08a5d5351
  3. Affected versionversion=f994752b11273ded7ec6b49ae5c1d319eef21743 <4ca1503491f1f25a954c13ac5775bf6775c5abc8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=7.2; version=f994752b11273ded7ec6b49ae5c1d319eef21743 <1b82958f3f035df5ccaab5430a2302f08a5d5351; version=f994752b11273ded7ec6b49ae5c1d319eef21743 <4ca1503491f1f25a954c13ac5775bf6775c5abc8

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
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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