CVE-2022-49693

Service interruption via unreleased device-node reference

Published Feb 26, 2025 · Updated May 11, 2026

A refcount leak in the Linux kernel before 5.19 allows local users to exhaust kernel resources and interrupt service. The mdp4_modeset_init_intf function retains the remote device-tree node returned by of_graph_get_remote_node instead of releasing it with of_node_put. The flaw requires local low-privileged access and a system using the MSM MDP4 display path, and its published impact is limited to availability.

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

A refcount leak in the Linux kernel before 5.19 allows local users to exhaust kernel resources and interrupt service. The mdp4_modeset_init_intf function retains the remote device-tree node returned by of_graph_get_remote_node instead of releasing it with of_node_put. The flaw requires local low-privileged access and a system using the MSM MDP4 display path, and its published impact is limited to availability.

The record

CVE
CVE-2022-49693
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=4.12
  2. Affected versionversion=86418f90a4c1a0073db65d8a1e2bf94421117a60 <3c39a17197733bc37786ed68c83267c2f491840b
  3. Affected versionversion=86418f90a4c1a0073db65d8a1e2bf94421117a60 <b9cc4598607cb7f7eae5c75fc1e3209cd52ff5e0
  4. Affected versionversion=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d1592d3e362cc59b29f15019707b16c695d70ca3
  5. Affected versionversion=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d16a4339825e64f9ddcdff5277982d640bae933b
  6. Affected versionversion=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d607da76fd2b1cf1d377af9d9b7c6f8fecbb0e1d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=86418f90a4c1a0073db65d8a1e2bf94421117a60 <3c39a17197733bc37786ed68c83267c2f491840b; version=86418f90a4c1a0073db65d8a1e2bf94421117a60 <b9cc4598607cb7f7eae5c75fc1e3209cd52ff5e0; version=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d1592d3e362cc59b29f15019707b16c695d70ca3; version=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d16a4339825e64f9ddcdff5277982d640bae933b; version=86418f90a4c1a0073db65d8a1e2bf94421117a60 <d607da76fd2b1cf1d377af9d9b7c6f8fecbb0e1d

Published CVSS scores

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

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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