CVE-2022-50105

Service interruption via SPU device-node reference leak

Published Jun 18, 2025 · Updated May 11, 2026

Reference-count leakage in Linux 2.6.20 through 5.19.1 allows local users to interrupt service through the powerpc SPU filesystem. spufs_init_isolated_loader obtains the /spu-isolation device-tree node with of_find_node_by_path but fails to release that reference with of_node_put. The path is limited to PowerPC Cell systems with that device-tree node, and public sources do not disclose how local users repeatedly reach it.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leakage in Linux 2.6.20 through 5.19.1 allows local users to interrupt service through the powerpc SPU filesystem. spufs_init_isolated_loader obtains the /spu-isolation device-tree node with of_find_node_by_path but fails to release that reference with of_node_put. The path is limited to PowerPC Cell systems with that device-tree node, and public sources do not disclose how local users repeatedly reach it.

The record

CVE
CVE-2022-50105
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 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=0afacde3df4c9980f505d9afd7cb0058389732ca <0aa5de2547b7ccf0a31bc740d12f829fae243112
  2. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <14329d29a048dc35aac2374fb3d588d8190095a2
  3. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <4288eb035ba4ddb53245e9365c919bb51ac00c2c
  4. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <43584490ee6c8a104797444af6bf89d0dafe95c0
  5. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <69e9fa07b229badab808980e984a9fe824116f00
  6. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <6ac059dacffa8ab2f7798f20e4bd3333890c541c
  7. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <85aff6a9b7b7ec4e5c319f7946c9864c8d5e3d4a
  8. Affected versionversion=0afacde3df4c9980f505d9afd7cb0058389732ca <d0cb99948c5f6d8fe56f6e69b8dd0a05ee5f9cec
  9. Affected versionversion=2.6.20

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0afacde3df4c9980f505d9afd7cb0058389732ca <0aa5de2547b7ccf0a31bc740d12f829fae243112; version=0afacde3df4c9980f505d9afd7cb0058389732ca <14329d29a048dc35aac2374fb3d588d8190095a2; version=0afacde3df4c9980f505d9afd7cb0058389732ca <4288eb035ba4ddb53245e9365c919bb51ac00c2c; version=0afacde3df4c9980f505d9afd7cb0058389732ca <43584490ee6c8a104797444af6bf89d0dafe95c0; version=0afacde3df4c9980f505d9afd7cb0058389732ca <69e9fa07b229badab808980e984a9fe824116f00; version=0afacde3df4c9980f505d9afd7cb0058389732ca <6ac059dacffa8ab2f7798f20e4bd3333890c541c; version=0afacde3df4c9980f505d9afd7cb0058389732ca <85aff6a9b7b7ec4e5c319f7946c9864c8d5e3d4a; version=0afacde3df4c9980f505d9afd7cb0058389732ca <d0cb99948c5f6d8fe56f6e69b8dd0a05ee5f9cec; version=2.6.20

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 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

T1499Endpoint Denial of Service

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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