CVE-2022-49832

Kernel crash via unchecked allocation failure

Published May 1, 2025 · Updated May 11, 2026

NULL pointer dereference in Linux pinctrl devicetree code allows local users to crash the kernel while pin mappings are built. In pinctrl_dt_to_map, a failed kasprintf allocation supplies NULL as a property name to of_find_property, which reaches strcmp and dereferences it. Triggering requires local low-privileged access and an allocation failure during devicetree pin-control mapping; the reported consequence is availability loss only.

CVSS severity5.5
Medium
EPSS probability0.21%
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 Linux pinctrl devicetree code allows local users to crash the kernel while pin mappings are built. In pinctrl_dt_to_map, a failed kasprintf allocation supplies NULL as a property name to of_find_property, which reaches strcmp and dereferences it. Triggering requires local low-privileged access and an allocation failure during devicetree pin-control mapping; the reported consequence is availability loss only.

The record

CVE
CVE-2022-49832
Published
May 1, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=3.5
  2. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <040f726fecd88121f3b95e70369785ad452dddf9
  3. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <5834a3a98cd266ad35a229923c0adbd0addc8d68
  4. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <777430aa4ddccaa5accec6db90ffc1d47f00d471
  5. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <91d5c5060ee24fe8da88cd585bb43b843d2f0dce
  6. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <97e5b508e96176f1a73888ed89df396d7041bfcb
  7. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <a988dcd3dd9e691c5ccc3324b209688f3b5453e9
  8. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <aaf552c5d53abe4659176e099575fe870d2e4768
  9. Affected versionversion=57291ce295c0aca738dd284c4a9c591c09ebee71 <b4d9f55cd38435358bc16d580612bc0d798d7b4c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.5; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <040f726fecd88121f3b95e70369785ad452dddf9; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <5834a3a98cd266ad35a229923c0adbd0addc8d68; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <777430aa4ddccaa5accec6db90ffc1d47f00d471; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <91d5c5060ee24fe8da88cd585bb43b843d2f0dce; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <97e5b508e96176f1a73888ed89df396d7041bfcb; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <a988dcd3dd9e691c5ccc3324b209688f3b5453e9; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <aaf552c5d53abe4659176e099575fe870d2e4768; version=57291ce295c0aca738dd284c4a9c591c09ebee71 <b4d9f55cd38435358bc16d580612bc0d798d7b4c

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 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

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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