CVE-2026-23473

Rejected by assigning authority

Published Apr 3, 2026 · Updated Apr 3, 2026

The CVE record for Linux Kernel was rejected by kernel.org, so it no longer identifies a confirmed vulnerability or affected release. The superseding status replaces the earlier io_uring/poll race description and removes the associated fix references from the active record. No current vulnerability mechanism, affected version, attacker gate, or security consequence remains attributable to this identifier.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

The CVE record for Linux Kernel was rejected by kernel.org, so it no longer identifies a confirmed vulnerability or affected release. The superseding status replaces the earlier io_uring/poll race description and removes the associated fix references from the active record. No current vulnerability mechanism, affected version, attacker gate, or security consequence remains attributable to this identifier.

The record

CVE
CVE-2026-23473
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 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=5.19
  2. Affected versionversion=dbc2564cfe0faff439dc46adb8c009589054ea46 <0f4ce79b8db7b040373fc664c8bc6c5fd74bd196
  3. Affected versionversion=dbc2564cfe0faff439dc46adb8c009589054ea46 <a68ed2df72131447d131531a08fe4dfcf4fa4653
  4. Affected versionversion=dbc2564cfe0faff439dc46adb8c009589054ea46 <bf33554b6abf7e7faeadd8af1b82037ea755a6bb

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.19; version=dbc2564cfe0faff439dc46adb8c009589054ea46 <0f4ce79b8db7b040373fc664c8bc6c5fd74bd196; version=dbc2564cfe0faff439dc46adb8c009589054ea46 <a68ed2df72131447d131531a08fe4dfcf4fa4653; version=dbc2564cfe0faff439dc46adb8c009589054ea46 <bf33554b6abf7e7faeadd8af1b82037ea755a6bb

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

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo