CVE-2022-50154

Service interruption via PCIe node refcount leak

Published Jun 18, 2025 · Updated May 11, 2026

A refcount leak in the MediaTek Gen3 PCIe driver in the Linux kernel allows local users to interrupt service during controller setup. mtk_pcie_init_irq_domains() obtains the interrupt-controller node with of_get_child_by_name() but omits the matching of_node_put(), retaining its reference after IRQ-domain setup. Local low-privileged access is the published attack gate, and exposure requires a system that initializes the MediaTek Gen3 PCIe controller.

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

A refcount leak in the MediaTek Gen3 PCIe driver in the Linux kernel allows local users to interrupt service during controller setup. mtk_pcie_init_irq_domains() obtains the interrupt-controller node with of_get_child_by_name() but omits the matching of_node_put(), retaining its reference after IRQ-domain setup. Local low-privileged access is the published attack gate, and exposure requires a system that initializes the MediaTek Gen3 PCIe controller.

The record

CVE
CVE-2022-50154
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=5.13
  2. Affected versionversion=814cceebba9b7d1306b8d49587ffb0e81f7b73af <0675fe20da7fa69b1ba80c23470c1433a2356c03
  3. Affected versionversion=814cceebba9b7d1306b8d49587ffb0e81f7b73af <2aa166c39d5a8221e6e22ab1a583656d4c8dc7f7
  4. Affected versionversion=814cceebba9b7d1306b8d49587ffb0e81f7b73af <bf038503d5fe90189743124233fe7aeb0984e961
  5. Affected versionversion=814cceebba9b7d1306b8d49587ffb0e81f7b73af <e593e22786edd9eca058cf054d6a2e12c138da67

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=814cceebba9b7d1306b8d49587ffb0e81f7b73af <0675fe20da7fa69b1ba80c23470c1433a2356c03; version=814cceebba9b7d1306b8d49587ffb0e81f7b73af <2aa166c39d5a8221e6e22ab1a583656d4c8dc7f7; version=814cceebba9b7d1306b8d49587ffb0e81f7b73af <bf038503d5fe90189743124233fe7aeb0984e961; version=814cceebba9b7d1306b8d49587ffb0e81f7b73af <e593e22786edd9eca058cf054d6a2e12c138da67

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

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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
Privilegesauthenticated
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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