CVE-2022-49354

Service interruption via leaked device references

Published Feb 26, 2025 · Updated May 11, 2026

A reference leak in the Linux pata_octeon_cf driver allows local users to interrupt service through repeated device probing. The octeon_cf_probe function calls of_find_device_by_node, which acquires a device reference, but fails to call put_device after the reference is no longer needed. Repeated probing of an affected Octeon CompactFlash controller leaks references and can exhaust kernel resources.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A reference leak in the Linux pata_octeon_cf driver allows local users to interrupt service through repeated device probing. The octeon_cf_probe function calls of_find_device_by_node, which acquires a device reference, but fails to call put_device after the reference is no longer needed. Repeated probing of an affected Octeon CompactFlash controller leaks references and can exhaust kernel resources.

The record

CVE
CVE-2022-49354
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=3.8
  2. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <10d6bdf532902be1d8aa5900b3c03c5671612aa2
  3. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <19cb3ece14547cb1ca2021798aaf49a3f82643d1
  4. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <7bd85c5ba1687daf54e3b6907673c3604b1e75cf
  5. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <888312dc297a8a103f6371ef668c7e04f57a7679
  6. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <8d8ad067b90f231b8fdb14acee673ca4012f6045
  7. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <a4d3e5f1d7d4f8b5e3834fec0f057a762c55806b
  8. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <c9782e1b21bee4b783a64b2a91e7e71406c21a21
  9. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <d5a1e7f33c88780b279835d63665d7e38ccb671f
  10. Affected versionversion=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <fb2cb409b504bb3a69e65a17f3120328c8e50219

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <10d6bdf532902be1d8aa5900b3c03c5671612aa2; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <19cb3ece14547cb1ca2021798aaf49a3f82643d1; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <7bd85c5ba1687daf54e3b6907673c3604b1e75cf; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <888312dc297a8a103f6371ef668c7e04f57a7679; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <8d8ad067b90f231b8fdb14acee673ca4012f6045; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <a4d3e5f1d7d4f8b5e3834fec0f057a762c55806b; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <c9782e1b21bee4b783a64b2a91e7e71406c21a21; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <d5a1e7f33c88780b279835d63665d7e38ccb671f; version=43f01da0f2794b464ade2ffe1f780c69d7ce7b75 <fb2cb409b504bb3a69e65a17f3120328c8e50219

Published CVSS scores

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.

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Technologies

Your stack

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Your stack

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