CVE-2022-50813

Resource leak via unreleased MCB device reference

Published Dec 30, 2025 · Updated Dec 30, 2025

Resource leak in affected Linux kernel branches from 4.7 through 6.1 retains a device reference after an MCB probe failure. In drivers/mcb/mcb-core.c, mcb_probe() calls get_device() before the driver's probe callback but omits put_device() when that callback returns an error. The failure path requires an MCB driver probe error; public sources do not establish attacker control of that error or a crash, hang, or other operational consequence, and the patch was compile-tested only.

CVSS severityUnavailable
Unscored
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in affected Linux kernel branches from 4.7 through 6.1 retains a device reference after an MCB probe failure. In drivers/mcb/mcb-core.c, mcb_probe() calls get_device() before the driver's probe callback but omits put_device() when that callback returns an error. The failure path requires an MCB driver probe error; public sources do not establish attacker control of that error or a crash, hang, or other operational consequence, and the patch was compile-tested only.

The record

CVE
CVE-2022-50813
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=4.7
  2. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0468a585710bbb807a1b9c31df54bcf564d28b2b
  3. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0a23dda78946f604ff752fe223c3c1f4fa6dd7b4
  4. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0d1c2c8db28919c4351000d7c1692f1767bdc4f7
  5. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <531ac7b911a962b3b29565dad6ea6b5c3fad3317
  6. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <68e54d9ee8222d7805a0b9d3e1c37b8cf3be536a
  7. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <6f3467aa5712e6b5550e75a16454b3f17aa1f380
  8. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <d7237462561fcd224fa687c56ccb68629f50fc0d
  9. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <e420ca85bf42a684ea729c505c07de6709500ed2
  10. Affected versionversion=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <f3686e5e8de0a03c8e70e3ee0ce3078fed612909

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4.7; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0468a585710bbb807a1b9c31df54bcf564d28b2b; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0a23dda78946f604ff752fe223c3c1f4fa6dd7b4; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <0d1c2c8db28919c4351000d7c1692f1767bdc4f7; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <531ac7b911a962b3b29565dad6ea6b5c3fad3317; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <68e54d9ee8222d7805a0b9d3e1c37b8cf3be536a; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <6f3467aa5712e6b5550e75a16454b3f17aa1f380; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <d7237462561fcd224fa687c56ccb68629f50fc0d; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <e420ca85bf42a684ea729c505c07de6709500ed2; version=7bc364097a89a0a9a5e5e4989d6b3e6fb2027a9e <f3686e5e8de0a03c8e70e3ee0ce3078fed612909

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

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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.

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Technologies

Your stack

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Your stack

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