CVE-2022-49517

Local denial of service via node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

A reference-count leak in Linux 4.12 and later allows local users to cause a service interrupt in the MediaTek ASoC driver. mt2701_wm8960_machine_probe obtains platform_node and codec_node with of_parse_phandle() but fails to release their incremented references on return paths. Reachability requires the MT2701 WM8960 device-tree probe path, and the public record does not identify a reliable trigger or the resulting interruption mode.

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 reference-count leak in Linux 4.12 and later allows local users to cause a service interrupt in the MediaTek ASoC driver. mt2701_wm8960_machine_probe obtains platform_node and codec_node with of_parse_phandle() but fails to release their incremented references on return paths. Reachability requires the MT2701 WM8960 device-tree probe path, and the public record does not identify a reliable trigger or the resulting interruption mode.

The record

CVE
CVE-2022-49517
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=8625c1dbd87631572f8e2c05bc67736b73d6f02f <05654431a18fe24e5e46a375d98904134628a102
  3. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <318afb1442eeef089fe7f8a8297d97c0302ff6f6
  4. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <61a85a20e8df5e0a92cfe169c92425c7bae0753b
  5. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <9345122f5fb9f97a206f440f38bb656e53f46912
  6. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <94587aa17abf8b26f543d2b29c44abc21bc36836
  7. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <bc2afecaabd2a2c9f17e43b4793a30e3461bfb29
  8. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <c71494f5f2b444adfd992a7359a0d2a791642b39
  9. Affected versionversion=8625c1dbd87631572f8e2c05bc67736b73d6f02f <f279c49f17ce10866087ea6c0c57382158974b63

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <05654431a18fe24e5e46a375d98904134628a102; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <318afb1442eeef089fe7f8a8297d97c0302ff6f6; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <61a85a20e8df5e0a92cfe169c92425c7bae0753b; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <9345122f5fb9f97a206f440f38bb656e53f46912; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <94587aa17abf8b26f543d2b29c44abc21bc36836; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <bc2afecaabd2a2c9f17e43b4793a30e3461bfb29; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <c71494f5f2b444adfd992a7359a0d2a791642b39; version=8625c1dbd87631572f8e2c05bc67736b73d6f02f <f279c49f17ce10866087ea6c0c57382158974b63

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

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.

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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