CVE-2022-49437

Service interruption via XIVE node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

Reference leak in the PowerPC XIVE subsystem in Linux allows local users to interrupt service through resource exhaustion. xive_spapr_init retains the reference returned by of_find_compatible_node instead of releasing the device node with of_node_put. A local low-privileged user must reach the PowerPC pSeries sPAPR XIVE initialization path, but the public record does not describe how that path is retriggered after boot.

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

Reference leak in the PowerPC XIVE subsystem in Linux allows local users to interrupt service through resource exhaustion. xive_spapr_init retains the reference returned by of_find_compatible_node instead of releasing the device node with of_node_put. A local low-privileged user must reach the PowerPC pSeries sPAPR XIVE initialization path, but the public record does not describe how that path is retriggered after boot.

The record

CVE
CVE-2022-49437
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=4.14
  2. Affected versionversion=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <1d1fb9618bdd5a5fbf9a9eb75133da301d33721c
  3. Affected versionversion=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <65f11ccdd746e0e7f0b469cc989ba43d4f30ecfe
  4. Affected versionversion=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <6e806485d851986a2445267608f27cb4ba2ed774
  5. Affected versionversion=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <cc62dde2a5f4ba14016fd9caec76f08d388f4b9c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <1d1fb9618bdd5a5fbf9a9eb75133da301d33721c; version=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <65f11ccdd746e0e7f0b469cc989ba43d4f30ecfe; version=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <6e806485d851986a2445267608f27cb4ba2ed774; version=eac1e731b59ee3b5f5e641a7765c7ed41ed26226 <cc62dde2a5f4ba14016fd9caec76f08d388f4b9c

Published CVSS scores

5.5NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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