CVE-2022-50117

Kernel Oops via unsupported VFIO migration operations

Published Jun 18, 2025 · Updated May 11, 2026

Denial of service in Linux kernel 5.18 allows local users to trigger a kernel Oops through unsupported mlx5 VFIO migration operations. The mlx5 VFIO driver exposes set_state and get_state callbacks without checking migration capabilities, letting VFIO invoke them while migration state_mutex remains uninitialized. Reachability requires local access to an mlx5 VFIO device without migration support; a crafted migration-state request can interrupt the host kernel.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux kernel 5.18 allows local users to trigger a kernel Oops through unsupported mlx5 VFIO migration operations. The mlx5 VFIO driver exposes set_state and get_state callbacks without checking migration capabilities, letting VFIO invoke them while migration state_mutex remains uninitialized. Reachability requires local access to an mlx5 VFIO device without migration support; a crafted migration-state request can interrupt the host kernel.

The record

CVE
CVE-2022-50117
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-824, T1499.004
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=5.18
  2. Affected versionversion=6fadb021266d03c5fd7bca2cfa1607efd246dad1 <6e97eba8ad8748fabb795cffc5d9e1a7dcfd7367
  3. Affected versionversion=6fadb021266d03c5fd7bca2cfa1607efd246dad1 <bba6b12d73d36e0ddbc2c3ac5668a667b00d4345

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=6fadb021266d03c5fd7bca2cfa1607efd246dad1 <6e97eba8ad8748fabb795cffc5d9e1a7dcfd7367; version=6fadb021266d03c5fd7bca2cfa1607efd246dad1 <bba6b12d73d36e0ddbc2c3ac5668a667b00d4345

Published CVSS scores

7.0Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
T1499.004Application or System Exploitation

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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