CVE-2022-49447

Local service interruption via device-node reference leak

Published Feb 26, 2025 · Updated May 11, 2026

Resource leak in Linux kernel ARM HiSilicon support allows local users to interrupt service by exhausting kernel resources. In arch/arm/mach-hisi/platsmp.c, hi3xxx_smp_prepare_cpus() and hip01_boot_secondary() retain references returned by of_find_compatible_node() because their paths omit of_node_put(). Reachability is limited to affected 32-bit ARM HiSilicon systems, and the reported consequence is availability loss rather than data disclosure or modification.

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

Resource leak in Linux kernel ARM HiSilicon support allows local users to interrupt service by exhausting kernel resources. In arch/arm/mach-hisi/platsmp.c, hi3xxx_smp_prepare_cpus() and hip01_boot_secondary() retain references returned by of_find_compatible_node() because their paths omit of_node_put(). Reachability is limited to affected 32-bit ARM HiSilicon systems, and the reported consequence is availability loss rather than data disclosure or modification.

The record

CVE
CVE-2022-49447
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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=3.14
  2. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <21a3effe446dd6dc5eed7fe897c2f9b88c9a5d6d
  3. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <45d211668d33c49d73f5213e8c2b58468108647c
  4. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <46cb7868811d025c3d29c10d18b3422db1cf20d5
  5. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <9bc72e47d4630d58a840a66a869c56b29554cfe4
  6. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <a3265a9440030068547a20dfee646666f3ca5278
  7. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <cafaaae4bb9ce84a2791fa29bf6907a9466c3883
  8. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <dd4be8ecfb41a29e7c4e551b4e866157ce4a3429
  9. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <e109058165137ef42841abd989f080adfefa14fa
  10. Affected versionversion=a9434e96d9f089e778b440217f815c8e85daf317 <f8da78b2bae1f54746647a2bb44f8bd6025c57af

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.14; version=a9434e96d9f089e778b440217f815c8e85daf317 <21a3effe446dd6dc5eed7fe897c2f9b88c9a5d6d; version=a9434e96d9f089e778b440217f815c8e85daf317 <45d211668d33c49d73f5213e8c2b58468108647c; version=a9434e96d9f089e778b440217f815c8e85daf317 <46cb7868811d025c3d29c10d18b3422db1cf20d5; version=a9434e96d9f089e778b440217f815c8e85daf317 <9bc72e47d4630d58a840a66a869c56b29554cfe4; version=a9434e96d9f089e778b440217f815c8e85daf317 <a3265a9440030068547a20dfee646666f3ca5278; version=a9434e96d9f089e778b440217f815c8e85daf317 <cafaaae4bb9ce84a2791fa29bf6907a9466c3883; version=a9434e96d9f089e778b440217f815c8e85daf317 <dd4be8ecfb41a29e7c4e551b4e866157ce4a3429; version=a9434e96d9f089e778b440217f815c8e85daf317 <e109058165137ef42841abd989f080adfefa14fa; version=a9434e96d9f089e778b440217f815c8e85daf317 <f8da78b2bae1f54746647a2bb44f8bd6025c57af

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 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

T1499.004Application or System Exploitation

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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