CVE-2022-50143

Service interruption via unreleased PCI IRQ vectors

Published Jun 18, 2025 · Updated May 11, 2026

Resource leak in Linux kernel 5.2 through 5.19.1 allows local users to interrupt service through failed intel_th PCI probes. The intel_th_pci_probe error path returns after intel_th_alloc fails without calling pci_free_irq_vectors, leaving allocated vectors unreleased. Exploitation requires local low-privileged access and a probe failure after IRQ allocation; the disclosed consequence is availability loss only.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux kernel 5.2 through 5.19.1 allows local users to interrupt service through failed intel_th PCI probes. The intel_th_pci_probe error path returns after intel_th_alloc fails without calling pci_free_irq_vectors, leaving allocated vectors unreleased. Exploitation requires local low-privileged access and a probe failure after IRQ allocation; the disclosed consequence is availability loss only.

The record

CVE
CVE-2022-50143
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.2
  2. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <086c28ab7c5699256aced0049aae9c42f1410313
  3. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <859342220accd0d332864fafbf4e3d2d0492bc3f
  4. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <9b5469573a274729bdb04b60a8d71f8d09940a31
  5. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <a8f3b78b1f8e959d06801ae82149f140a75724e8
  6. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <ed4d5ecb7d7fd80336afb2f9ac6685651a6aa32f
  7. Affected versionversion=7b7036d47c356a40818e516a69ac81a5dcc1613f <fae9da7d4c2ccad3792de03e3cac1fe2bfabb73d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.2; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <086c28ab7c5699256aced0049aae9c42f1410313; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <859342220accd0d332864fafbf4e3d2d0492bc3f; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <9b5469573a274729bdb04b60a8d71f8d09940a31; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <a8f3b78b1f8e959d06801ae82149f140a75724e8; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <ed4d5ecb7d7fd80336afb2f9ac6685651a6aa32f; version=7b7036d47c356a40818e516a69ac81a5dcc1613f <fae9da7d4c2ccad3792de03e3cac1fe2bfabb73d

Published CVSS scores

5.5NIST NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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