CVE-2022-49481

Local denial of service via device-node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

Reference-count leak in the Linux kernel PFUZE100 regulator driver from 3.12 allows local users to exhaust kernel memory. pfuze_parse_regulators_dt obtains an incremented device-tree node reference with of_node_get but omits the matching of_node_put after the node is no longer needed. Low-privileged local access and use of the affected regulator path are required; repeated triggering can deny service by consuming kernel memory.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leak in the Linux kernel PFUZE100 regulator driver from 3.12 allows local users to exhaust kernel memory. pfuze_parse_regulators_dt obtains an incremented device-tree node reference with of_node_get but omits the matching of_node_put after the node is no longer needed. Low-privileged local access and use of the affected regulator path are required; repeated triggering can deny service by consuming kernel memory.

The record

CVE
CVE-2022-49481
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=3.12
  2. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <0be5d9da5743b9825a95baec85a67500b2c1d362
  3. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <49d785baeb91568332197be356d138e5e59c7ddb
  4. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <56ab0c01027492cd161c64148e1dc892c56887ad
  5. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <671be14fc31374b1a10a3abd93db6a8480838fc9
  6. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <6ca675f4abbc74bc991d154a1ecc8b384dc2aae4
  7. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <984cfef0675ed7398814e14af2c5323911723e1c
  8. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <9f564e29a51210a49df3d925117777c157a17d6d
  9. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <afaa7b933ef00a2d3262f4d1252087613fb5c06d
  10. Affected versionversion=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <b74c0dd9179d21b7260260e075d597b23970100c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.12; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <0be5d9da5743b9825a95baec85a67500b2c1d362; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <49d785baeb91568332197be356d138e5e59c7ddb; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <56ab0c01027492cd161c64148e1dc892c56887ad; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <671be14fc31374b1a10a3abd93db6a8480838fc9; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <6ca675f4abbc74bc991d154a1ecc8b384dc2aae4; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <984cfef0675ed7398814e14af2c5323911723e1c; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <9f564e29a51210a49df3d925117777c157a17d6d; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <afaa7b933ef00a2d3262f4d1252087613fb5c06d; version=3784b6d64dc52ed3fbebad61a85ab9b7a687a167 <b74c0dd9179d21b7260260e075d597b23970100c

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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