CVE-2022-49324

Service interruption via MIPS CPC reference leak

Published Feb 26, 2025 · Updated May 23, 2026

Reference-count leak in the MIPS CPC code in Linux allows local users to consume kernel resources and interrupt service. The mips_cpc_default_phys_base function obtains a device-tree node through of_find_compatible_node but fails to call of_node_put, leaving the node reference count elevated. Low-privileged local access and an affected MIPS CPC configuration are required; the leak affects availability, with no reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reference-count leak in the MIPS CPC code in Linux allows local users to consume kernel resources and interrupt service. The mips_cpc_default_phys_base function obtains a device-tree node through of_find_compatible_node but fails to call of_node_put, leaving the node reference count elevated. Low-privileged local access and an affected MIPS CPC configuration are required; the leak affects availability, with no reported data disclosure or modification.

The record

CVE
CVE-2022-49324
Published
Feb 26, 2025
Updated
May 23, 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 23, 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=4.14.27 <4.14.283
  2. Affected versionversion=4.15.10 <4.16
  3. Affected versionversion=4.16
  4. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <1699ec1bfb59304a788901474f6bb003f7831b61
  5. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <4107fa700f314592850e2c64608f6ede4c077476
  6. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <8f843cdfc202caaa5d67db3395d893e56362e43a
  7. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <961ee8a6eeef4632a215d995d837b204f8c7c2d4
  8. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <aae6b4bb63c694bc91714412718f15468407fe51
  9. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <c667b3872a4c435a3f29d4e15971cd8c378b0043
  10. Affected versionversion=791412dafbbfd860e78983d45cf71db603a82f67 <cc0aed22d33ced9e266c50bdf1cbe668c5acfdf8
  11. Affected versionversion=7a676d14cc093c19c07d213a0ddc7f5c47154aae
  12. Affected versionversion=dc2f0da8350e413923ad67e2e26d8d9f1fb97aff <bed702566dcdb6ebe300bc0c62bf3600cf4d5874

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14.27 <4.14.283; version=4.15.10 <4.16; version=4.16; version=791412dafbbfd860e78983d45cf71db603a82f67 <1699ec1bfb59304a788901474f6bb003f7831b61; version=791412dafbbfd860e78983d45cf71db603a82f67 <4107fa700f314592850e2c64608f6ede4c077476; version=791412dafbbfd860e78983d45cf71db603a82f67 <8f843cdfc202caaa5d67db3395d893e56362e43a; version=791412dafbbfd860e78983d45cf71db603a82f67 <961ee8a6eeef4632a215d995d837b204f8c7c2d4; version=791412dafbbfd860e78983d45cf71db603a82f67 <aae6b4bb63c694bc91714412718f15468407fe51; version=791412dafbbfd860e78983d45cf71db603a82f67 <c667b3872a4c435a3f29d4e15971cd8c378b0043; version=791412dafbbfd860e78983d45cf71db603a82f67 <cc0aed22d33ced9e266c50bdf1cbe668c5acfdf8; version=7a676d14cc093c19c07d213a0ddc7f5c47154aae; version=dc2f0da8350e413923ad67e2e26d8d9f1fb97aff <bed702566dcdb6ebe300bc0c62bf3600cf4d5874

Published CVSS scores

5.5CISACVSS: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

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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