CVE-2022-50158

Local service interruption via RedBoot node refcount leak

Published Jun 18, 2025 · Updated May 23, 2026

Reference-count leakage in Linux kernel MTD partition parsing allows local users to interrupt service during RedBoot parsing. The parse_redboot_of function obtains the RedBoot device-tree child with of_get_child_by_name(), increments its node reference count, and fails to release that reference with of_node_put() after use. Reachability requires local low-privileged access and a system that invokes the RedBoot parser; published records do not identify a repeatable trigger or specific crash mode.

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

Reference-count leakage in Linux kernel MTD partition parsing allows local users to interrupt service during RedBoot parsing. The parse_redboot_of function obtains the RedBoot device-tree child with of_get_child_by_name(), increments its node reference count, and fails to release that reference with of_node_put() after use. Reachability requires local low-privileged access and a system that invokes the RedBoot parser; published records do not identify a repeatable trigger or specific crash mode.

The record

CVE
CVE-2022-50158
Published
Jun 18, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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

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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=237960880960863fb41888763d635b384cffb104 <7ec48ac18d8f9e002ce9bfbad32741086739e499
  2. Affected versionversion=237960880960863fb41888763d635b384cffb104 <8ea607579d300b2f7fc997f3dd20949114565fcd
  3. Affected versionversion=237960880960863fb41888763d635b384cffb104 <9f7e62815cf3cbbcb1b8cb21649fb4dfdb3aa016
  4. Affected versionversion=237960880960863fb41888763d635b384cffb104 <e24af43d0cbe9f6aaa413c15ccce50bbbfd61e0e
  5. Affected versionversion=2f8824f556a3ebea9840c53326e55cc183316611 <55d0f7da66dec93c4d53d0886a1555618079a900
  6. Affected versionversion=5.10.50 <5.10.137
  7. Affected versionversion=5.12.17 <5.13
  8. Affected versionversion=5.13.2 <5.14
  9. Affected versionversion=5.14
  10. Affected versionversion=5.4.132 <5.4.211
  11. Affected versionversion=6490ed7c4684caf9851a0b98e0ab17a8d693dada <f3cc27198c5d78cdda60a55ae749f815cd1fe5eb
  12. Affected versionversion=d5023eb76f0dc651558b0c7ba04565891ff18435
  13. Affected versionversion=fa132c7ea108eacc67357ffe3172d3e68fcd71a2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=237960880960863fb41888763d635b384cffb104 <7ec48ac18d8f9e002ce9bfbad32741086739e499; version=237960880960863fb41888763d635b384cffb104 <8ea607579d300b2f7fc997f3dd20949114565fcd; version=237960880960863fb41888763d635b384cffb104 <9f7e62815cf3cbbcb1b8cb21649fb4dfdb3aa016; version=237960880960863fb41888763d635b384cffb104 <e24af43d0cbe9f6aaa413c15ccce50bbbfd61e0e; version=2f8824f556a3ebea9840c53326e55cc183316611 <55d0f7da66dec93c4d53d0886a1555618079a900; version=5.10.50 <5.10.137; version=5.12.17 <5.13; version=5.13.2 <5.14; version=5.14; version=5.4.132 <5.4.211; version=6490ed7c4684caf9851a0b98e0ab17a8d693dada <f3cc27198c5d78cdda60a55ae749f815cd1fe5eb; version=d5023eb76f0dc651558b0c7ba04565891ff18435; version=fa132c7ea108eacc67357ffe3172d3e68fcd71a2

Published CVSS scores

5.5NVDCVSS: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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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