CVE-2022-50106

Local service interruption via device-node refcount leak

Published Jun 18, 2025 · Updated May 11, 2026

Resource leak in the Axon MSI code in Linux 2.6.23 through 5.19.1 allows local users to interrupt service through repeated MSI setup failures. The setup_msi_msg_address error path calls of_get_next_parent(), which increments the device-node reference count, but returns without calling of_node_put(). Exposure requires a PowerPC Cell system with the Axon MSI controller and repeated reachability of that error path; no data disclosure or modification is reported.

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 the Axon MSI code in Linux 2.6.23 through 5.19.1 allows local users to interrupt service through repeated MSI setup failures. The setup_msi_msg_address error path calls of_get_next_parent(), which increments the device-node reference count, but returns without calling of_node_put(). Exposure requires a PowerPC Cell system with the Axon MSI controller and repeated reachability of that error path; no data disclosure or modification is reported.

The record

CVE
CVE-2022-50106
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=2.6.23
  2. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <00dc7cbbb558955ff410fd392cc9b0366eb06df0
  3. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <02ed44125d7a7238999750ca126b60f8dd7a88b1
  4. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <51cf876b11fb6ca06f69e9d1de58f892d1522e9d
  5. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <5eaa93caa63abf382b319dbe2f032232026740c2
  6. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <6263ec8032c411b8ef6b7f00198cb18c855ee6cb
  7. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <af41cff4ada533b1cf40de6c468ba164fd32c22d
  8. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <df5d4b616ee76abc97e5bd348e22659c2b095b1c
  9. Affected versionversion=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <f388643657cd5a04dc47a68d85321876c5b4c208

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.23; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <00dc7cbbb558955ff410fd392cc9b0366eb06df0; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <02ed44125d7a7238999750ca126b60f8dd7a88b1; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <51cf876b11fb6ca06f69e9d1de58f892d1522e9d; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <5eaa93caa63abf382b319dbe2f032232026740c2; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <6263ec8032c411b8ef6b7f00198cb18c855ee6cb; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <af41cff4ada533b1cf40de6c468ba164fd32c22d; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <df5d4b616ee76abc97e5bd348e22659c2b095b1c; version=ce21b3c9648ae55181787bf25ee00cf91dfd5c91 <f388643657cd5a04dc47a68d85321876c5b4c208

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 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

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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