CVE-2022-49683

Service interruption via device-node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

A reference-count leak in the Linux kernel allows local users to interrupt service through the Analog Devices AXI ADC driver. The adi_axi_adc_attach_client function retains the node returned by of_parse_phandle instead of releasing it with of_node_put, causing references to accumulate. Reachability requires a device tree that instantiates the AXI ADC platform driver on compatible FPGA and converter hardware.

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 the Linux kernel allows local users to interrupt service through the Analog Devices AXI ADC driver. The adi_axi_adc_attach_client function retains the node returned by of_parse_phandle instead of releasing it with of_node_put, causing references to accumulate. Reachability requires a device tree that instantiates the AXI ADC platform driver on compatible FPGA and converter hardware.

The record

CVE
CVE-2022-49683
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=5.8
  2. Affected versionversion=ef04070692a21633ec6a60f80c19b6af44b3cf47 <501652a2ad5450b4908e1f204ce75b2414c305b7
  3. Affected versionversion=ef04070692a21633ec6a60f80c19b6af44b3cf47 <5eaa84e1605035a90a64d25b6cba79e89d188175
  4. Affected versionversion=ef04070692a21633ec6a60f80c19b6af44b3cf47 <ab7bf025cee89db73c649216ddd2bc589c3d3862
  5. Affected versionversion=ef04070692a21633ec6a60f80c19b6af44b3cf47 <ada7b0c0dedafd7d059115adf49e48acba3153a8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=ef04070692a21633ec6a60f80c19b6af44b3cf47 <501652a2ad5450b4908e1f204ce75b2414c305b7; version=ef04070692a21633ec6a60f80c19b6af44b3cf47 <5eaa84e1605035a90a64d25b6cba79e89d188175; version=ef04070692a21633ec6a60f80c19b6af44b3cf47 <ab7bf025cee89db73c649216ddd2bc589c3d3862; version=ef04070692a21633ec6a60f80c19b6af44b3cf47 <ada7b0c0dedafd7d059115adf49e48acba3153a8

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 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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