CVE-2022-50110

Local denial of service via leaked MMIO resource

Published Jun 18, 2025 · Updated May 23, 2026

A memory leak in the sp5100_tco watchdog driver in affected Linux kernel versions allows local users to exhaust kernel memory. The sp5100_tco_setupdevice_mmio cleanup path calls release_resource on the allocated EFCH MMIO resource but omits the separate kfree needed to release its memory. Exposure requires AMD EFCH hardware and execution of the driver's MMIO setup path; public records do not describe how low-privileged users repeatedly reach that path.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in the sp5100_tco watchdog driver in affected Linux kernel versions allows local users to exhaust kernel memory. The sp5100_tco_setupdevice_mmio cleanup path calls release_resource on the allocated EFCH MMIO resource but omits the separate kfree needed to release its memory. Exposure requires AMD EFCH hardware and execution of the driver's MMIO setup path; public records do not describe how low-privileged users repeatedly reach that path.

The record

CVE
CVE-2022-50110
Published
Jun 18, 2025
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <3a1becb1f13268ef58f19190608a7c742fb6fcf5
  2. Affected versionversion=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <c6d9c0798ed366a09a9e53d71edcd2266e34a6eb
  3. Affected versionversion=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <ee1fb8f75abe361413913e3a6e93c8c0a4d83cd9
  4. Affected versionversion=15b5d74600b98adf396d416ed59e0d43726f2671
  5. Affected versionversion=5.15.42 <5.15.61
  6. Affected versionversion=5.17.10 <5.18
  7. Affected versionversion=5.18
  8. Affected versionversion=b4c0f1600df43245c8c3425dbd9426fdfba6c4b2 <84ddf527f90755beec6b55ce2e31331f5ccd4e37

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <3a1becb1f13268ef58f19190608a7c742fb6fcf5; version=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <c6d9c0798ed366a09a9e53d71edcd2266e34a6eb; version=0578fff4aae5bce3f09875f58e68e9ffbab8daf5 <ee1fb8f75abe361413913e3a6e93c8c0a4d83cd9; version=15b5d74600b98adf396d416ed59e0d43726f2671; version=5.15.42 <5.15.61; version=5.17.10 <5.18; version=5.18; version=b4c0f1600df43245c8c3425dbd9426fdfba6c4b2 <84ddf527f90755beec6b55ce2e31331f5ccd4e37

Published CVSS scores

5.5NIST NVDCVSS: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 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

CWE-401Missing Release of Memory after Effective Lifetime
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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