CVE-2022-49392

Kernel crash via unchecked resource lookup

Published Feb 26, 2025 · Updated May 11, 2026

A NULL pointer dereference in the Aspeed virtual UART driver in Linux kernel 5.14 and later affected branches allows local users to crash the kernel. The aspeed_vuart_probe function uses the result of platform_get_resource for res->start and resource_size(res) without first rejecting a NULL return. The published assessment requires local low-privileged access, although the CNA and patch do not describe how such a user causes the platform memory resource lookup to fail.

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

A NULL pointer dereference in the Aspeed virtual UART driver in Linux kernel 5.14 and later affected branches allows local users to crash the kernel. The aspeed_vuart_probe function uses the result of platform_get_resource for res->start and resource_size(res) without first rejecting a NULL return. The published assessment requires local low-privileged access, although the CNA and patch do not describe how such a user causes the platform memory resource lookup to fail.

The record

CVE
CVE-2022-49392
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
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=5.14
  2. Affected versionversion=54da3e381c2b55289b220601f403f17df7b20597 <0e0fd55719fa081de6f9e5d9e6cef48efb04d34a
  3. Affected versionversion=54da3e381c2b55289b220601f403f17df7b20597 <90a6b6fc52bfdcfe9698454bf5bea26112abbcd1
  4. Affected versionversion=54da3e381c2b55289b220601f403f17df7b20597 <923d34ce069e8e51a4d003caa6b66a8cd6ecd0ed
  5. Affected versionversion=54da3e381c2b55289b220601f403f17df7b20597 <d5f1275f101e0e8a172d300d897f5a12e87e3485

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.14; version=54da3e381c2b55289b220601f403f17df7b20597 <0e0fd55719fa081de6f9e5d9e6cef48efb04d34a; version=54da3e381c2b55289b220601f403f17df7b20597 <90a6b6fc52bfdcfe9698454bf5bea26112abbcd1; version=54da3e381c2b55289b220601f403f17df7b20597 <923d34ce069e8e51a4d003caa6b66a8cd6ecd0ed; version=54da3e381c2b55289b220601f403f17df7b20597 <d5f1275f101e0e8a172d300d897f5a12e87e3485

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.

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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
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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