CVE-2022-49449

Local system crash via unchecked platform resource

Published Feb 26, 2025 · Updated May 11, 2026

NULL pointer dereference in the Renesas RZ/N1 pin controller in Linux allows local users to crash the system during resource mapping. In sh_pfc_map_resources(), platform_get_resource() can return NULL, but the code uses the resulting res pointer before resource mapping can reject it. Exploitation requires local low-privileged access and an RZ/N1 pin-controller configuration that makes platform resource lookup fail; no data disclosure or modification is reported.

CVSS severity5.5
Medium
EPSS probability0.26%
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 the Renesas RZ/N1 pin controller in Linux allows local users to crash the system during resource mapping. In sh_pfc_map_resources(), platform_get_resource() can return NULL, but the code uses the resulting res pointer before resource mapping can reject it. Exploitation requires local low-privileged access and an RZ/N1 pin-controller configuration that makes platform resource lookup fail; no data disclosure or modification is reported.

The record

CVE
CVE-2022-49449
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
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=4.20
  2. Affected versionversion=4e53b5004745ef26a37bca4933b2d3ea71313f2a <01f9e02e0f13df3fd291676dc80054e977be1601
  3. Affected versionversion=4e53b5004745ef26a37bca4933b2d3ea71313f2a <2f661477c2bb8068194dbba9738d05219f111c6e
  4. Affected versionversion=4e53b5004745ef26a37bca4933b2d3ea71313f2a <34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e
  5. Affected versionversion=4e53b5004745ef26a37bca4933b2d3ea71313f2a <b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c
  6. Affected versionversion=4e53b5004745ef26a37bca4933b2d3ea71313f2a <c16b59d445135c8026a04e388d8b2762feaa3b3b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.20; version=4e53b5004745ef26a37bca4933b2d3ea71313f2a <01f9e02e0f13df3fd291676dc80054e977be1601; version=4e53b5004745ef26a37bca4933b2d3ea71313f2a <2f661477c2bb8068194dbba9738d05219f111c6e; version=4e53b5004745ef26a37bca4933b2d3ea71313f2a <34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e; version=4e53b5004745ef26a37bca4933b2d3ea71313f2a <b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c; version=4e53b5004745ef26a37bca4933b2d3ea71313f2a <c16b59d445135c8026a04e388d8b2762feaa3b3b

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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

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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

CWE-476NULL Pointer Dereference

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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