CVE-2022-49462

Local resource exhaustion via a6xx node refcount leak

Published Feb 26, 2025 · Updated May 11, 2026

Resource exhaustion in the Linux kernel allows local users to consume kernel resources by repeatedly initializing a Qualcomm Adreno a6xx GPU. The a6xx_gpu_init path obtains a device-tree node with of_parse_phandle(), but the caller omits the matching of_node_put() after a6xx_gmu_init uses it. Low-privileged local access and an applicable a6xx GPU configuration are required; the vendor does not specify whether exhaustion causes a hang or crash.

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 exhaustion in the Linux kernel allows local users to consume kernel resources by repeatedly initializing a Qualcomm Adreno a6xx GPU. The a6xx_gpu_init path obtains a device-tree node with of_parse_phandle(), but the caller omits the matching of_node_put() after a6xx_gmu_init uses it. Low-privileged local access and an applicable a6xx GPU configuration are required; the vendor does not specify whether exhaustion causes a hang or crash.

The record

CVE
CVE-2022-49462
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
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=4.19
  2. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <06907a374f1b74f8f2fb30720dc6df81331e4fb5
  3. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <48e82ce8cdb19c20a5020fa446b286d6a147450c
  4. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <65ddbc0d26824e2a5d6154d01d8cf39344900213
  5. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <6832e36f156ea35a6ed74bca72727806116effdd
  6. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <c56de483093d7ad0782327f95dda7da97bc4c315
  7. Affected versionversion=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <edff4c1af831d0c02e654eed9da7d74174de49d5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.19; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <06907a374f1b74f8f2fb30720dc6df81331e4fb5; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <48e82ce8cdb19c20a5020fa446b286d6a147450c; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <65ddbc0d26824e2a5d6154d01d8cf39344900213; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <6832e36f156ea35a6ed74bca72727806116effdd; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <c56de483093d7ad0782327f95dda7da97bc4c315; version=4b565ca5a2cbbbb6345e8789da89c193b6b00e5a <edff4c1af831d0c02e654eed9da7d74174de49d5

Published CVSS scores

5.5NIST NVDCVSS: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

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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