CVE-2026-23237: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9438-9qfw-m4v5
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-23237 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23237 at a Glance

CVE Identifier CVE-2026-23237
GHSA Identifier GHSA-9438-9qfw-m4v5
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-23237

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-23237, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: platform/x86: classmate-laptop: Add missing NULL pointer checks In a few places in the Classmate laptop driver, code using the accel object may run before that object's address is stored in the driver data of the input device using it. For example, cmpc_accel_sensitivity_store_v4() is the "show" method of cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(), before calling dev_set_drvdata() for inputdev->dev. If the sysfs attribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev) call in in cmpc_accel_sensitivity_store_v4() returns NULL which leads to a NULL pointer dereference going forward. Moreover, sysfs attributes using the input device are added before initializing that device by cmpc_add_acpi_notify_device() and if one of them is accessed before running that function, a NULL pointer dereference will occur. For example, cmpc_accel_sensitivity_attr_v4 is added before calling cmpc_add_acpi_notify_device() and if it is read prematurely, the dev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4() returns NULL which leads to a NULL pointer dereference going forward. Fix this by adding NULL pointer checks in all of the relevant places.

References

NVD — CVE-2026-23237 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23237
git.kernel.org/stable/c/97528b1622... WEB
https://git.kernel.org/stable/c/97528b1622b8f129574d29a571c32a3c85eafa3c
git.kernel.org/stable/c/993708fc18... WEB
https://git.kernel.org/stable/c/993708fc18d0d0919db438361b4e8c1f980a8d1b
git.kernel.org/stable/c/9cf4b9b8ad... WEB
https://git.kernel.org/stable/c/9cf4b9b8ad09d6e05307abc4e951cabdff4be652
git.kernel.org/stable/c/af673209d4... WEB
https://git.kernel.org/stable/c/af673209d43b46257540997aba042b90ef3258c0
git.kernel.org/stable/c/da6e06a5fd... WEB
https://git.kernel.org/stable/c/da6e06a5fdbabea3870d18c227734b5dea5b3be6
git.kernel.org/stable/c/eb214804f0... WEB
https://git.kernel.org/stable/c/eb214804f03c829decf10998e9b7dd26f4c8ab9e
git.kernel.org/stable/c/fe747d7112... WEB
https://git.kernel.org/stable/c/fe747d7112283f47169e9c16e751179a9b38611e

Frequently Asked Questions

What is CVE-2026-23237?
CVE-2026-23237 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-476: NULL Pointer Dereference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23237?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23237?
CVE-2026-23237 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-23237?
CVE-2026-23237 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Maven dependencies for CVE-2026-23237?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9438-9qfw-m4v5",
  "modified" : "2026-03-17T21:31:42Z",
  "published" : "2026-03-04T15:30:36Z",
  "aliases" : [ "CVE-2026-23237" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: classmate-laptop: Add missing NULL pointer checks\n\nIn a few places in the Classmate laptop driver, code using the accel\nobject may run before that object's address is stored in the driver\ndata of the input device using it.\n\nFor example, cmpc_accel_sensitivity_store_v4() is the \"show\" method\nof cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(),\nbefore calling dev_set_drvdata() for inputdev->dev.  If the sysfs\nattribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev)\ncall in in cmpc_accel_sensitivity_store_v4() returns NULL which\nleads to a NULL pointer dereference going forward.\n\nMoreover, sysfs attributes using the input device are added before\ninitializing that device by cmpc_add_acpi_notify_device() and if one\nof them is accessed before running that function, a NULL pointer\ndereference will occur.\n\nFor example, cmpc_accel_sensitivity_attr_v4 is added before calling\ncmpc_add_acpi_notify_device() and if it is read prematurely, the\ndev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4()\nreturns NULL which leads to a NULL pointer dereference going forward.\n\nFix this by adding NULL pointer checks in all of the relevant places.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-23237"
  }, {
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    "url" : "https://git.kernel.org/stable/c/97528b1622b8f129574d29a571c32a3c85eafa3c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/993708fc18d0d0919db438361b4e8c1f980a8d1b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9cf4b9b8ad09d6e05307abc4e951cabdff4be652"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/af673209d43b46257540997aba042b90ef3258c0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/da6e06a5fdbabea3870d18c227734b5dea5b3be6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eb214804f03c829decf10998e9b7dd26f4c8ab9e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fe747d7112283f47169e9c16e751179a9b38611e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-03-04T15:16:14Z"
  }
}