CVE-2022-49656

Service interruption via leaked device-tree reference

Published Feb 26, 2025 · Updated May 11, 2026

Resource leak in the ARM Meson CPU setup code in Linux allows local users to interrupt service through unreleased device-tree nodes. The meson_smp_prepare_cpus function calls of_find_compatible_node, which increments the node reference count, but fails to call of_node_put after using the returned node. Exploitation requires low-privileged local access on an affected ARM Meson system; the published impact is limited to service interruption.

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

Resource leak in the ARM Meson CPU setup code in Linux allows local users to interrupt service through unreleased device-tree nodes. The meson_smp_prepare_cpus function calls of_find_compatible_node, which increments the node reference count, but fails to call of_node_put after using the returned node. Exploitation requires low-privileged local access on an affected ARM Meson system; the published impact is limited to service interruption.

The record

CVE
CVE-2022-49656
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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

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=4.15
  2. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <2e1bcd33478ef44e63a45457055060b5fe4118ad
  3. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <34d2cd3fccced12b958b8848e3eff0ee4296764c
  4. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <3cf8ece9113242c10f83c7675ea4f4f67959ee43
  5. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <3d90607e7e6afa89768b0aaa915b58bd2b849276
  6. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <7208101ded1e9dcc52c8f0f8b16474211c871c1a
  7. Affected versionversion=d850f3e5d2966e5c9eb55f66181cee960737e04c <c5fbf4f74c94fd60d5e9bf9f7f8268c3601562ca

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <2e1bcd33478ef44e63a45457055060b5fe4118ad; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <34d2cd3fccced12b958b8848e3eff0ee4296764c; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <3cf8ece9113242c10f83c7675ea4f4f67959ee43; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <3d90607e7e6afa89768b0aaa915b58bd2b849276; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <7208101ded1e9dcc52c8f0f8b16474211c871c1a; version=d850f3e5d2966e5c9eb55f66181cee960737e04c <c5fbf4f74c94fd60d5e9bf9f7f8268c3601562ca

Published CVSS scores

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

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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

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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