CVE-2022-49239

Local service interruption via leaked device-node references

Published Feb 26, 2025 · Updated May 11, 2026

Resource leakage in the Linux kernel ASoC WCD934x codec driver allows local users to interrupt service by exhausting kernel memory. wcd934x_codec_parse_data calls of_parse_phandle, which increments a device_node reference count, but omits of_node_put after use. Low-privileged local access and a system using the WCD934x codec path are required; the published record does not identify the precise 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

Resource leakage in the Linux kernel ASoC WCD934x codec driver allows local users to interrupt service by exhausting kernel memory. wcd934x_codec_parse_data calls of_parse_phandle, which increments a device_node reference count, but omits of_node_put after use. Low-privileged local access and a system using the WCD934x codec path are required; the published record does not identify the precise interruption mode.

The record

CVE
CVE-2022-49239
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

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=5.6
  2. Affected versionversion=a61f3b4f476eceb25274161e5a53a8d18e42610b <1f24716e38220fc9e52e208d20591d2bc9b7f020
  3. Affected versionversion=a61f3b4f476eceb25274161e5a53a8d18e42610b <2f44eca78cc6d4e1779eb95765ec79e433accab4
  4. Affected versionversion=a61f3b4f476eceb25274161e5a53a8d18e42610b <9531a631379169d57756b2411178c6238655df88
  5. Affected versionversion=a61f3b4f476eceb25274161e5a53a8d18e42610b <f3793eeb7b94a5eeed6f5c7a44bce403c6681a12
  6. Affected versionversion=a61f3b4f476eceb25274161e5a53a8d18e42610b <f8e89d84ea83c51ba3ba97ff154f7aa679326760

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=a61f3b4f476eceb25274161e5a53a8d18e42610b <1f24716e38220fc9e52e208d20591d2bc9b7f020; version=a61f3b4f476eceb25274161e5a53a8d18e42610b <2f44eca78cc6d4e1779eb95765ec79e433accab4; version=a61f3b4f476eceb25274161e5a53a8d18e42610b <9531a631379169d57756b2411178c6238655df88; version=a61f3b4f476eceb25274161e5a53a8d18e42610b <f3793eeb7b94a5eeed6f5c7a44bce403c6681a12; version=a61f3b4f476eceb25274161e5a53a8d18e42610b <f8e89d84ea83c51ba3ba97ff154f7aa679326760

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

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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