CVE-2022-50202

Local service hang via device-probe deadlock

Published Jun 18, 2025 · Updated May 11, 2026

Denial of service in Linux kernel hibernation handling allows local users to hang snapshot device access via USB gadget emulation. snapshot_open() calls wait_for_device_probe() while holding misc_mtx; an unresponsive raw-gadget probe then waits on code blocked by that mutex. A local process must emulate a USB device and stall its response, after which snapshot access can sleep indefinitely.

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

Denial of service in Linux kernel hibernation handling allows local users to hang snapshot device access via USB gadget emulation. snapshot_open() calls wait_for_device_probe() while holding misc_mtx; an unresponsive raw-gadget probe then waits on code blocked by that mutex. A local process must emulate a USB device and stall its response, after which snapshot access can sleep indefinitely.

The record

CVE
CVE-2022-50202
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
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

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=2.6.30
  2. Affected versionversion=c751085943362143f84346d274e0011419c84202 <003a456ae6f70bb97e436e02fc5105be577c1570
  3. Affected versionversion=c751085943362143f84346d274e0011419c84202 <2f0e18e0db42f4f8bc87d3d98333680065ceeff8
  4. Affected versionversion=c751085943362143f84346d274e0011419c84202 <3c48d3067eaf878642276f053575a5c642600a50
  5. Affected versionversion=c751085943362143f84346d274e0011419c84202 <5a283b59bce72c05c60e9f0fa92a28b5b850d8bb
  6. Affected versionversion=c751085943362143f84346d274e0011419c84202 <8386c414e27caba8501119948e9551e52b527f59
  7. Affected versionversion=c751085943362143f84346d274e0011419c84202 <8c90947e5f1801e6c7120021c6ea0f3ad6a4eb91
  8. Affected versionversion=c751085943362143f84346d274e0011419c84202 <b8e1ae9433d7bd95f2dcc044a7a6f20a4c40d258
  9. Affected versionversion=c751085943362143f84346d274e0011419c84202 <f7042cf9dd40733f387b7cac021e626c74b8856f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=c751085943362143f84346d274e0011419c84202 <003a456ae6f70bb97e436e02fc5105be577c1570; version=c751085943362143f84346d274e0011419c84202 <2f0e18e0db42f4f8bc87d3d98333680065ceeff8; version=c751085943362143f84346d274e0011419c84202 <3c48d3067eaf878642276f053575a5c642600a50; version=c751085943362143f84346d274e0011419c84202 <5a283b59bce72c05c60e9f0fa92a28b5b850d8bb; version=c751085943362143f84346d274e0011419c84202 <8386c414e27caba8501119948e9551e52b527f59; version=c751085943362143f84346d274e0011419c84202 <8c90947e5f1801e6c7120021c6ea0f3ad6a4eb91; version=c751085943362143f84346d274e0011419c84202 <b8e1ae9433d7bd95f2dcc044a7a6f20a4c40d258; version=c751085943362143f84346d274e0011419c84202 <f7042cf9dd40733f387b7cac021e626c74b8856f

Published CVSS scores

5.5NVDCVSS: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

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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