CVE-2022-50705

Kernel warnings via interrupt-context fsnotify calls

Published Dec 24, 2025 · Updated Dec 24, 2025

Improper execution context in affected Linux kernel io_uring code allows local users to trigger kernel locking-state warnings. The __io_complete_rw_common path invokes fsnotify access or write handling from kiocb completion, which can run in soft- or hard-interrupt context even though fanotify event handling allocates memory and acquires locks. Triggering requires asynchronous io_uring file I/O with filesystem notification handling; the published record demonstrates a lock-dependency warning but does not establish a crash or broader compromise.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper execution context in affected Linux kernel io_uring code allows local users to trigger kernel locking-state warnings. The __io_complete_rw_common path invokes fsnotify access or write handling from kiocb completion, which can run in soft- or hard-interrupt context even though fanotify event handling allocates memory and acquires locks. Triggering requires asynchronous io_uring file I/O with filesystem notification handling; the published record demonstrates a lock-dependency warning but does not establish a crash or broader compromise.

The record

CVE
CVE-2022-50705
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

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=5.18
  2. Affected versionversion=b436d1e92662adecafff4c95baae6352289c2d80
  3. Affected versionversion=df1ec53252d5b5b26ea49e30438741c9a6d89857 <89a410dbd0f159ddd308f19d6eb682fc753e4771
  4. Affected versionversion=dfbe550c8235b7e98284db37eeeddfd3b4b19b00
  5. Affected versionversion=f63cf5192fe3418ad5ae1a4412eba5694b145f79 <2a853c206e553dd9c0a55c22858fd6a446d93e15
  6. Affected versionversion=f63cf5192fe3418ad5ae1a4412eba5694b145f79 <b000145e9907809406d8164c3b2b8861d95aecd1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=b436d1e92662adecafff4c95baae6352289c2d80; version=df1ec53252d5b5b26ea49e30438741c9a6d89857 <89a410dbd0f159ddd308f19d6eb682fc753e4771; version=dfbe550c8235b7e98284db37eeeddfd3b4b19b00; version=f63cf5192fe3418ad5ae1a4412eba5694b145f79 <2a853c206e553dd9c0a55c22858fd6a446d93e15; version=f63cf5192fe3418ad5ae1a4412eba5694b145f79 <b000145e9907809406d8164c3b2b8861d95aecd1

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
PrivilegesUnavailable
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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