CVE-2022-50012

Service interruption via late jump-label initialization

Published Jun 18, 2025 · Updated May 11, 2026

Improper initialization in the PowerPC64 boot path in Linux 5.15 allows local users to interrupt service during early startup. early_init_devtree() can invoke parse_early_param() and its static-key users before jump_label_init() initializes jump labels, producing a kernel warning when a key is enabled. Reachability requires a 64-bit PowerPC system and an early parameter path that uses a static key, with threadirqs documented as one trigger.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper initialization in the PowerPC64 boot path in Linux 5.15 allows local users to interrupt service during early startup. early_init_devtree() can invoke parse_early_param() and its static-key users before jump_label_init() initializes jump labels, producing a kernel warning when a key is enabled. Reachability requires a 64-bit PowerPC system and an early parameter path that uses a static key, with threadirqs documented as one trigger.

The record

CVE
CVE-2022-50012
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

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=5.15
  2. Affected versionversion=91cc470e797828d779cd4c1efbe8519bcb358bae <8f9357313cdcadb0a311b44c29d4eaccc7fa632f
  3. Affected versionversion=91cc470e797828d779cd4c1efbe8519bcb358bae <ca829e05d3d4f728810cc5e4b468d9ebc7745eb3
  4. Affected versionversion=91cc470e797828d779cd4c1efbe8519bcb358bae <e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=91cc470e797828d779cd4c1efbe8519bcb358bae <8f9357313cdcadb0a311b44c29d4eaccc7fa632f; version=91cc470e797828d779cd4c1efbe8519bcb358bae <ca829e05d3d4f728810cc5e4b468d9ebc7745eb3; version=91cc470e797828d779cd4c1efbe8519bcb358bae <e3c9e9452a8ea12d335b1e59b2c72e1b99c699b8

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5Canonical UbuntuCVSS: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

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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