CVE-2022-49188

Local denial of service via device-node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

A device-node reference leak in the Linux kernel 4.8 through 5.17.1 allows local users to exhaust memory through remoteproc errors. The q6v5_alloc_memory_region function obtains a refcounted device_node through of_parse_phandle() or of_get_child_by_name() but releases it only when of_address_to_resource() succeeds. Repeated failing lookups on systems using the Qualcomm modem remoteproc driver consume kernel memory and can interrupt the service.

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 device-node reference leak in the Linux kernel 4.8 through 5.17.1 allows local users to exhaust memory through remoteproc errors. The q6v5_alloc_memory_region function obtains a refcounted device_node through of_parse_phandle() or of_get_child_by_name() but releases it only when of_address_to_resource() succeeds. Repeated failing lookups on systems using the Qualcomm modem remoteproc driver consume kernel memory and can interrupt the service.

The record

CVE
CVE-2022-49188
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
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=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <07a5dcc4bed9d7cae54adf5aa10ff9f037a3204b
  2. Affected versionversion=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <a7d988735e757e111f9722de7cf1b40a84a48b1f
  3. Affected versionversion=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <b9df3007b3cda4936cc50f5a7d2d30505a652828
  4. Affected versionversion=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <bd4771ba2cf9e18473a42b5b70175e50d67a64bb
  5. Affected versionversion=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <f7210ca29a783c94478da02368731e4c9cf7cdb7
  6. Affected versionversion=4.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <07a5dcc4bed9d7cae54adf5aa10ff9f037a3204b; version=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <a7d988735e757e111f9722de7cf1b40a84a48b1f; version=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <b9df3007b3cda4936cc50f5a7d2d30505a652828; version=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <bd4771ba2cf9e18473a42b5b70175e50d67a64bb; version=051fb70fd4ea40fbc7139186a4890b2fe5cb1e76 <f7210ca29a783c94478da02368731e4c9cf7cdb7; version=4.8

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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