CVE-2022-50653

Kernel crash via unchecked host-registration failure

Published Dec 9, 2025 · Updated May 11, 2026

Improper error handling in the atmel-mci driver in Linux allows attackers to crash the kernel via a failed host-registration path. The probe path ignores an error returned by mmc_add_host(), leaks the host allocated by mmc_alloc_host(), and leaves removal to call device_del() for a device that was never registered. The crash requires host registration to fail and the affected device's remove path to run; public records do not identify an attacker-controlled trigger or required privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper error handling in the atmel-mci driver in Linux allows attackers to crash the kernel via a failed host-registration path. The probe path ignores an error returned by mmc_add_host(), leaks the host allocated by mmc_alloc_host(), and leaves removal to call device_del() for a device that was never registered. The crash requires host registration to fail and the affected device's remove path to run; public records do not identify an attacker-controlled trigger or required privileges.

The record

CVE
CVE-2022-50653
Published
Dec 9, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 9, 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=2.6.27
  2. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <00ac0f5f95920f003cd6ece53cdc759549b69118
  3. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <1925472dec31ec061d57412b3a65a056ea24f340
  4. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <6bb26abb92f25e582a0976091a10b539fe3796db
  5. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <85946ceb0fac20ab39cdb85333086daf0291a553
  6. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <99a6cdfa2cf05028b52f6d8ee85ccc5f8b71b4a2
  7. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <9e6e8c43726673ca2abcaac87640b9215fd72f4c
  8. Affected versionversion=7d2be0749a59096a334c94dc48f43294193cb8ed <cc8bb436f3c842a86b9082d97933582120d180e2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=7d2be0749a59096a334c94dc48f43294193cb8ed <00ac0f5f95920f003cd6ece53cdc759549b69118; version=7d2be0749a59096a334c94dc48f43294193cb8ed <1925472dec31ec061d57412b3a65a056ea24f340; version=7d2be0749a59096a334c94dc48f43294193cb8ed <6bb26abb92f25e582a0976091a10b539fe3796db; version=7d2be0749a59096a334c94dc48f43294193cb8ed <85946ceb0fac20ab39cdb85333086daf0291a553; version=7d2be0749a59096a334c94dc48f43294193cb8ed <99a6cdfa2cf05028b52f6d8ee85ccc5f8b71b4a2; version=7d2be0749a59096a334c94dc48f43294193cb8ed <9e6e8c43726673ca2abcaac87640b9215fd72f4c; version=7d2be0749a59096a334c94dc48f43294193cb8ed <cc8bb436f3c842a86b9082d97933582120d180e2

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.

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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)
VectorUnavailable
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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