CVE-2026-46297

Kernel warning via mismatched threaded interrupt registration

Published Jun 8, 2026 · Updated Jun 8, 2026

Incorrect interrupt registration in the Linux Kernel allows local users to trigger a kernel warning through a VF interface. The libwx VF miscellaneous-interrupt setup passes a primary handler and a null threaded handler to request_threaded_irq while setting IRQF_ONESHOT. Reaching the path requires CAP_NET_ADMIN in the initial network namespace and bringing up an affected physical VF interface; no data access or code execution is reported.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect interrupt registration in the Linux Kernel allows local users to trigger a kernel warning through a VF interface. The libwx VF miscellaneous-interrupt setup passes a primary handler and a null threaded handler to request_threaded_irq while setting IRQF_ONESHOT. Reaching the path requires CAP_NET_ADMIN in the initial network namespace and bringing up an affected physical VF interface; no data access or code execution is reported.

The record

CVE
CVE-2026-46297
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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=6.17
  2. Affected versionversion=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <1bca036fe3607182c21f05e2b262167edbef086c
  3. Affected versionversion=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <7a33345153eeeda195c55f15be27074e4c3b5109
  4. Affected versionversion=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <a841574c6e573132681aa57f9b43a0a897a423f6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.17; version=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <1bca036fe3607182c21f05e2b262167edbef086c; version=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <7a33345153eeeda195c55f15be27074e4c3b5109; version=eb4898fde1de8cf09f8a6b344dbd87536e0b1170 <a841574c6e573132681aa57f9b43a0a897a423f6

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS: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.

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)
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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