CVE-2022-49243

Local service interruption via device-node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

Resource leak in the Atmel ASoC driver in Linux allows local users to exhaust kernel resources through repeated device probing. The at91sam9g20ek_audio_probe function keeps the device-tree node reference returned by of_parse_phandle without balancing it with of_node_put. Exposure requires the AT91SAM9G20-EK audio driver and repeated local probe activity; accumulated references can interrupt service by exhausting kernel resources.

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 leak in the Atmel ASoC driver in Linux allows local users to exhaust kernel resources through repeated device probing. The at91sam9g20ek_audio_probe function keeps the device-tree node reference returned by of_parse_phandle without balancing it with of_node_put. Exposure requires the AT91SAM9G20-EK audio driver and repeated local probe activity; accumulated references can interrupt service by exhausting kernel resources.

The record

CVE
CVE-2022-49243
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=3.8
  2. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <0325193cf40dc3a6e27d55a5b98680936deebcd0
  3. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <32e6ceb05f36432811753852c674a301f944a24b
  4. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <4793a02deb31b71b3984abc67bf1011a03c13b18
  5. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <662ee5ac6b451aa5a27b8eebd397f2f5c7f42cec
  6. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <81f266396237cea09a8c6322a6a78535f06ed345
  7. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <a0bc36b247dcf4d21bf820bfc4bcbaf7f6cf19b5
  8. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <b0c56a0071116a37c24df998166c22a7e4684626
  9. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <f590797fa3c1bccdd19e55441592a23b46aef449
  10. Affected versionversion=531f67e41dcde1e358cf821d056241a66355cf03 <f8b7b9a0594715ecfbe6f18db2328d992242654a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=531f67e41dcde1e358cf821d056241a66355cf03 <0325193cf40dc3a6e27d55a5b98680936deebcd0; version=531f67e41dcde1e358cf821d056241a66355cf03 <32e6ceb05f36432811753852c674a301f944a24b; version=531f67e41dcde1e358cf821d056241a66355cf03 <4793a02deb31b71b3984abc67bf1011a03c13b18; version=531f67e41dcde1e358cf821d056241a66355cf03 <662ee5ac6b451aa5a27b8eebd397f2f5c7f42cec; version=531f67e41dcde1e358cf821d056241a66355cf03 <81f266396237cea09a8c6322a6a78535f06ed345; version=531f67e41dcde1e358cf821d056241a66355cf03 <a0bc36b247dcf4d21bf820bfc4bcbaf7f6cf19b5; version=531f67e41dcde1e358cf821d056241a66355cf03 <b0c56a0071116a37c24df998166c22a7e4684626; version=531f67e41dcde1e358cf821d056241a66355cf03 <f590797fa3c1bccdd19e55441592a23b46aef449; version=531f67e41dcde1e358cf821d056241a66355cf03 <f8b7b9a0594715ecfbe6f18db2328d992242654a

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.

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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

No sourced classifications are available.

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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