CVE-2022-50246

Local denial of service via firmware-node leak

Published Sep 15, 2025 · Updated Sep 15, 2025

Resource leak in the Linux kernel TCP-CI driver allows local users to exhaust resources through repeated device loading. tcpci_parse_config stores a firmware-node reference returned by device_get_named_child_node, but registration error and unregister paths fail to release it. Reachability requires a TCP-CI connector device node and repeated port registration or teardown; the reported consequence is resource exhaustion and service interruption.

CVSS severity5.5
Medium
EPSS probability0.16%
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 the Linux kernel TCP-CI driver allows local users to exhaust resources through repeated device loading. tcpci_parse_config stores a firmware-node reference returned by device_get_named_child_node, but registration error and unregister paths fail to release it. Reachability requires a TCP-CI connector device node and repeated port registration or teardown; the reported consequence is resource exhaustion and service interruption.

The record

CVE
CVE-2022-50246
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record 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=4.19
  2. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <0384e87e3fec735e47f1c133c796f32ef7a72a9b
  3. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <4f257e2eba419ab4cd880c822346450e4e7b2af3
  4. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <5f125507d2270035dfcf83fbff6cff5a143e200c
  5. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <ba75be6f0d9d028d20852564206565a4c03e3288
  6. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <d3b6c28a71f111a6c67ddc3238aab95910fd86cf
  7. Affected versionversion=5e85a04c8c0d271d7561a770b85741f186398868 <e75a324409715bd71348f79a49aa61b69dbeb676

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.19; version=5e85a04c8c0d271d7561a770b85741f186398868 <0384e87e3fec735e47f1c133c796f32ef7a72a9b; version=5e85a04c8c0d271d7561a770b85741f186398868 <4f257e2eba419ab4cd880c822346450e4e7b2af3; version=5e85a04c8c0d271d7561a770b85741f186398868 <5f125507d2270035dfcf83fbff6cff5a143e200c; version=5e85a04c8c0d271d7561a770b85741f186398868 <ba75be6f0d9d028d20852564206565a4c03e3288; version=5e85a04c8c0d271d7561a770b85741f186398868 <d3b6c28a71f111a6c67ddc3238aab95910fd86cf; version=5e85a04c8c0d271d7561a770b85741f186398868 <e75a324409715bd71348f79a49aa61b69dbeb676

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.3Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/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

CWE-772Missing Release of Resource 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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