CVE-2022-48663

Kernel crash via GPIO mockup teardown ordering

Published Apr 28, 2024 · Updated May 11, 2026

NULL pointer dereference in affected Linux kernel releases allows local users to crash the kernel during GPIO mockup module removal. The gpio_mockup_exit function removes the global debugfs directory before unregistering platform devices, whose teardown then dereferences removed debugfs state. Triggering the fault requires local access and permission to unload the GPIO mockup module; the bounded consequence is a kernel crash and service interruption.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in affected Linux kernel releases allows local users to crash the kernel during GPIO mockup module removal. The gpio_mockup_exit function removes the global debugfs directory before unregistering platform devices, whose teardown then dereferences removed debugfs state. Triggering the fault requires local access and permission to unload the GPIO mockup module; the bounded consequence is a kernel crash and service interruption.

The record

CVE
CVE-2022-48663
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 28, 2024CVE 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=303e6da99429510b1e4edf833afe90ac8542e747 <b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68
  2. Affected versionversion=3815e66c2183f3430490e450ba16779cf5214ec6 <bdea98b98f844bd8a983ca880893e509a8b4162f
  3. Affected versionversion=3a10e8edee2b45a654f1f7b05f747129ec84cf9d <18352095a0d581f6aeb1e9fc9d68cc0152cd64b4
  4. Affected versionversion=5.10.144 <5.10.146
  5. Affected versionversion=5.15.69 <5.15.71
  6. Affected versionversion=5.19.10 <5.19.12
  7. Affected versionversion=bc55c1677edbe86a1c66a35e800df47dff16ad61 <af0bfabf06c74c260265c30ba81a34e7dec0e881

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=303e6da99429510b1e4edf833afe90ac8542e747 <b7df41a6f79dfb18ba2203f8c5f0e9c0b9b57f68; version=3815e66c2183f3430490e450ba16779cf5214ec6 <bdea98b98f844bd8a983ca880893e509a8b4162f; version=3a10e8edee2b45a654f1f7b05f747129ec84cf9d <18352095a0d581f6aeb1e9fc9d68cc0152cd64b4; version=5.10.144 <5.10.146; version=5.15.69 <5.15.71; version=5.19.10 <5.19.12; version=bc55c1677edbe86a1c66a35e800df47dff16ad61 <af0bfabf06c74c260265c30ba81a34e7dec0e881

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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