CVE-2026-31689: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9qrw-cmg5-g8vq
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-31689 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-2026-31689 at a Glance

CVE Identifier CVE-2026-31689
GHSA Identifier GHSA-9qrw-cmg5-g8vq
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-2026-31689

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-2026-31689, 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: EDAC/mc: Fix error path ordering in edac_mc_alloc() When the mci->pvt_info allocation in edac_mc_alloc() fails, the error path will call put_device() which will end up calling the device's release function. However, the init ordering is wrong such that device_initialize() happens *after* the failed allocation and thus the device itself and the release function pointer are not initialized yet when they're called: MCE: In-kernel MCE decoding enabled. ------------[ cut here ]------------ kobject: '(null)': is not initialized, yet kobject_put() is being called. WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full) RIP: 0010:kobject_put Call Trace: <TASK> edac_mc_alloc+0xbe/0xe0 [edac_core] amd64_edac_init+0x7a4/0xff0 [amd64_edac] ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac] do_one_initcall ... Reorder the calling sequence so that the device is initialized and thus the release function pointer is properly set before it can be used. This was found by Claude while reviewing another EDAC patch.

References

NVD — CVE-2026-31689 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31689
git.kernel.org/stable/c/51520e03e7... WEB
https://git.kernel.org/stable/c/51520e03e70d6c73e33ee7cbe0319767d05764fe
git.kernel.org/stable/c/75825648ce... WEB
https://git.kernel.org/stable/c/75825648ce984ca4cebb28e4bd2bf8c3a7e837c5
git.kernel.org/stable/c/87ce8ae511... WEB
https://git.kernel.org/stable/c/87ce8ae511962e105bcb3534944208c6a9471ed9
git.kernel.org/stable/c/aae95970fa... WEB
https://git.kernel.org/stable/c/aae95970fad2127a1bd49d8713c7cd0677dcd2d6
git.kernel.org/stable/c/d20e98c2df... WEB
https://git.kernel.org/stable/c/d20e98c2df9354cc744431ad8ccbf49405b8b40f
git.kernel.org/stable/c/d3de72e2a2... WEB
https://git.kernel.org/stable/c/d3de72e2a2b9ee3a57734c1c068823e41a707715

Frequently Asked Questions

What is CVE-2026-31689?
CVE-2026-31689 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-2026-31689?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-31689?
CVE-2026-31689 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-2026-31689?
CVE-2026-31689 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-2026-31689?
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-9qrw-cmg5-g8vq",
  "modified" : "2026-05-06T21:31:30Z",
  "published" : "2026-04-27T18:32:09Z",
  "aliases" : [ "CVE-2026-31689" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/mc: Fix error path ordering in edac_mc_alloc()\n\nWhen the mci->pvt_info allocation in edac_mc_alloc() fails, the error path\nwill call put_device() which will end up calling the device's release\nfunction.\n\nHowever, the init ordering is wrong such that device_initialize() happens\n*after* the failed allocation and thus the device itself and the release\nfunction pointer are not initialized yet when they're called:\n\n  MCE: In-kernel MCE decoding enabled.\n  ------------[ cut here ]------------\n  kobject: '(null)': is not initialized, yet kobject_put() is being called.\n  WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd\n  CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)\n  RIP: 0010:kobject_put\n  Call Trace:\n   <TASK>\n   edac_mc_alloc+0xbe/0xe0 [edac_core]\n   amd64_edac_init+0x7a4/0xff0 [amd64_edac]\n   ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]\n   do_one_initcall\n   ...\n\nReorder the calling sequence so that the device is initialized and thus the\nrelease function pointer is properly set before it can be used.\n\nThis was found by Claude while reviewing another EDAC patch.",
  "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-2026-31689"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/51520e03e70d6c73e33ee7cbe0319767d05764fe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/75825648ce984ca4cebb28e4bd2bf8c3a7e837c5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/87ce8ae511962e105bcb3534944208c6a9471ed9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aae95970fad2127a1bd49d8713c7cd0677dcd2d6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d20e98c2df9354cc744431ad8ccbf49405b8b40f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d3de72e2a2b9ee3a57734c1c068823e41a707715"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-27T18:16:54Z"
  }
}