CVE-2022-50730

Kernel warning via inode-eviction race

Published Dec 24, 2025 · Updated Dec 24, 2025

A race in ext4 inode eviction in affected Linux kernel builds allows local users to trigger a spurious WARN_ON_ONCE message. The ext4_evict_inode() check treats an inode re-dirtied by an unwritten-extent conversion worker as inconsistent even though eviction waits for conversion to finish. Reaching the warning requires dioread_nolock, newly allocated dirty blocks, and a race between unlink-driven eviction and extent conversion; the kernel record states that no inode use-after-free occurs.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race in ext4 inode eviction in affected Linux kernel builds allows local users to trigger a spurious WARN_ON_ONCE message. The ext4_evict_inode() check treats an inode re-dirtied by an unwritten-extent conversion worker as inconsistent even though eviction waits for conversion to finish. Reaching the warning requires dioread_nolock, newly allocated dirty blocks, and a race between unlink-driven eviction and extent conversion; the kernel record states that no inode use-after-free occurs.

The record

CVE
CVE-2022-50730
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record 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=5.8
  2. Affected versionversion=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <0d041b7251c13679a0f6c7926751ce1d8a7237c1
  3. Affected versionversion=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <3b893cc9a8d8b4e486a6639f5e107b56b7197d2e
  4. Affected versionversion=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <b085fb43feede48ebf80ab7e2dd150c8d9902932
  5. Affected versionversion=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <bc12ac98ea2e1b70adc6478c8b473a0003b659d3
  6. Affected versionversion=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <bdc698ce91f232fd5eb11d2373e9f82f687314b8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <0d041b7251c13679a0f6c7926751ce1d8a7237c1; version=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <3b893cc9a8d8b4e486a6639f5e107b56b7197d2e; version=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <b085fb43feede48ebf80ab7e2dd150c8d9902932; version=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <bc12ac98ea2e1b70adc6478c8b473a0003b659d3; version=ceff86fddae8748fe00d4f2d249cb02cae62ad84 <bdc698ce91f232fd5eb11d2373e9f82f687314b8

Published CVSS scores

No CVSS assessment is available in this record.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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