CVE-2022-50652Public exploit

Kernel scheduling disruption via unreleased IRQ spinlock

Published Dec 9, 2025 · Updated May 23, 2026

Denial of service in the Linux kernel UIO driver allows local users to disrupt interrupt handling through repeated disable requests. uio_dmem_genirq_irqcontrol() leaves its spinlock locked when an already-disabled interrupt receives another disable request, then reaches a sleeping operation while atomic. Reachability requires a configured uio_dmem_genirq platform device and write access to its /dev/uioX file; the demonstrated consequence is a kernel scheduling fault and interrupt-handling instability.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
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

Denial of service in the Linux kernel UIO driver allows local users to disrupt interrupt handling through repeated disable requests. uio_dmem_genirq_irqcontrol() leaves its spinlock locked when an already-disabled interrupt receives another disable request, then reaches a sleeping operation while atomic. Reachability requires a configured uio_dmem_genirq platform device and write access to its /dev/uioX file; the demonstrated consequence is a kernel scheduling fault and interrupt-handling instability.

The record

CVE
CVE-2022-50652
Published
Dec 9, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=0151b03f43f2d295a6949454434074b34a262e06 <a323d24a0183be730d2398b11b3a91e5c2e222a0
  2. Affected versionversion=1d52cd8b52876145b0f6344be95fc750e30d9ecb
  3. Affected versionversion=4.14.172 <4.14.303
  4. Affected versionversion=4.19.106 <4.19.270
  5. Affected versionversion=4.4.215 <4.5
  6. Affected versionversion=4.9.215 <4.9.337
  7. Affected versionversion=4a117a1c581623d04bf09aa7455d8e7b66e8bb85
  8. Affected versionversion=5.4.22 <5.4.229
  9. Affected versionversion=5.5.6 <5.6
  10. Affected versionversion=5.6
  11. Affected versionversion=750a95d63746458e86c6d92dfad48a05c64d0ecd <eca77a25a7cb3201738f4b55b9b8fa1089d7d002
  12. Affected versionversion=b74351287d4bd90636c3f48bc188c2f53824c2d4 <030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d
  13. Affected versionversion=b74351287d4bd90636c3f48bc188c2f53824c2d4 <79a4bdb6b9920134af1a4738a1fa36a0438cd905
  14. Affected versionversion=b74351287d4bd90636c3f48bc188c2f53824c2d4 <9bf7a0b2b15cd12e15f7858072bd89933746de67
  15. Affected versionversion=b74351287d4bd90636c3f48bc188c2f53824c2d4 <9de255c461d1b3f0242b3ad1450c3323a3e00b34
  16. Affected versionversion=b74351287d4bd90636c3f48bc188c2f53824c2d4 <ee180e867ce4b2f744799247b81050b3e5dd62cd
  17. Affected versionversion=b77fa964ecb1d72a671234f5bea95b41f77c233a <9977cb7af5a8f4738198b020436e2e56c5cd721e
  18. Affected versionversion=ea6b7b1d58790ffb36bace723f6e62a1c8595c77 <ac5585bb06a2e82177269bee93e59887ce591106

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0151b03f43f2d295a6949454434074b34a262e06 <a323d24a0183be730d2398b11b3a91e5c2e222a0; version=1d52cd8b52876145b0f6344be95fc750e30d9ecb; version=4.14.172 <4.14.303; version=4.19.106 <4.19.270; version=4.4.215 <4.5; version=4.9.215 <4.9.337; version=4a117a1c581623d04bf09aa7455d8e7b66e8bb85; version=5.4.22 <5.4.229; version=5.5.6 <5.6; version=5.6; version=750a95d63746458e86c6d92dfad48a05c64d0ecd <eca77a25a7cb3201738f4b55b9b8fa1089d7d002; version=b74351287d4bd90636c3f48bc188c2f53824c2d4 <030b6c7bb1e4edebaee2b1e48fbcc9cd5998d51d; version=b74351287d4bd90636c3f48bc188c2f53824c2d4 <79a4bdb6b9920134af1a4738a1fa36a0438cd905; version=b74351287d4bd90636c3f48bc188c2f53824c2d4 <9bf7a0b2b15cd12e15f7858072bd89933746de67; version=b74351287d4bd90636c3f48bc188c2f53824c2d4 <9de255c461d1b3f0242b3ad1450c3323a3e00b34; version=b74351287d4bd90636c3f48bc188c2f53824c2d4 <ee180e867ce4b2f744799247b81050b3e5dd62cd; version=b77fa964ecb1d72a671234f5bea95b41f77c233a <9977cb7af5a8f4738198b020436e2e56c5cd721e; version=ea6b7b1d58790ffb36bace723f6e62a1c8595c77 <ac5585bb06a2e82177269bee93e59887ce591106

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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