CVE-2022-50857

Kernel memory leak via failed port registration

Published Dec 30, 2025 · Updated Dec 30, 2025

Memory leak in affected Linux kernel branches beginning with 3.15 allows attackers to retain kernel memory after failed RapidIO port registration. The rio_register_mport() error path omits put_device(), leaving the dev_set_name() allocation and rio_mports list entry unreleased. The public record does not identify how an attacker can force the registration failure or quantify whether repeated leaks can interrupt service.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in affected Linux kernel branches beginning with 3.15 allows attackers to retain kernel memory after failed RapidIO port registration. The rio_register_mport() error path omits put_device(), leaving the dev_set_name() allocation and rio_mports list entry unreleased. The public record does not identify how an attacker can force the registration failure or quantify whether repeated leaks can interrupt service.

The record

CVE
CVE-2022-50857
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=2aaf308b95b24649a6dcfed89cd956e972089b2a <0a71344f99289250e4d5b8adbac76f444485c840
  2. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <117fede82e9d6ea3de30746d500eb5edc2eb8310
  3. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <1bbad5793f404cf218757e3beb600eca6080330f
  4. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <4ddbeae5f224d924cf0b12460dda88c7480aa452
  5. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <97d9eb45ffa67ffa112a6659953321b8f7db0065
  6. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <9abba4aa60874c5216fc8de7dededadc791de696
  7. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <a47de2fd3f88a7788be19f94ade72c2244a98045
  8. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <a73a626c0510d203e369aeb26c4d6ec9c75af027
  9. Affected versionversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <e92a216d16bde65d21a3227e0fb2aa0794576525
  10. Affected versionversion=3.15

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=2aaf308b95b24649a6dcfed89cd956e972089b2a <0a71344f99289250e4d5b8adbac76f444485c840; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <117fede82e9d6ea3de30746d500eb5edc2eb8310; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <1bbad5793f404cf218757e3beb600eca6080330f; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <4ddbeae5f224d924cf0b12460dda88c7480aa452; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <97d9eb45ffa67ffa112a6659953321b8f7db0065; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <9abba4aa60874c5216fc8de7dededadc791de696; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <a47de2fd3f88a7788be19f94ade72c2244a98045; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <a73a626c0510d203e369aeb26c4d6ec9c75af027; version=2aaf308b95b24649a6dcfed89cd956e972089b2a <e92a216d16bde65d21a3227e0fb2aa0794576525; version=3.15

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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