CVE-2026-64228: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-wx96-hrff-2rc8
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-64228 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-2026-64228 at a Glance

CVE Identifier CVE-2026-64228
GHSA Identifier GHSA-wx96-hrff-2rc8
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-2026-64228

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-2026-64228, 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: net: ethtool: phy: avoid NULL deref when PHY driver is unbound phydev->drv can become NULL while the phy_device is still attached to its net_device, namely after the PHY driver is unbound via sysfs: echo <mdio_id> > /sys/bus/mdio_bus/drivers/<phy_drv>/unbind phy_remove() clears phydev->drv but doesn't call phy_detach(), so the phy_device stays in the link topology xarray and ethnl_req_get_phydev() still hands it back. ETHTOOL_MSG_PHY_GET then oopses on: rep_data->drvname = kstrdup(phydev->drv->name, GFP_KERNEL); drvname is already treated as optional by phy_reply_size(), phy_fill_reply() and phy_cleanup_data(), so just skip the allocation when there is no driver bound.

References

NVD — CVE-2026-64228 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64228
git.kernel.org/stable/c/17fe2381f9... WEB
https://git.kernel.org/stable/c/17fe2381f967d353183f374a1c0181a6d194158c
git.kernel.org/stable/c/3586924625... WEB
https://git.kernel.org/stable/c/3586924625559e6f9876d726c80ff0a75f0d5849
git.kernel.org/stable/c/e3adf69f8e... WEB
https://git.kernel.org/stable/c/e3adf69f8eb121a9128c2b0029efd050d3649153

Frequently Asked Questions

What is CVE-2026-64228?
CVE-2026-64228 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-2026-64228?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64228?
CVE-2026-64228 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-2026-64228?
CVE-2026-64228 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-2026-64228?
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-wx96-hrff-2rc8",
  "modified" : "2026-08-13T12:31:09Z",
  "published" : "2026-07-24T18:31:27Z",
  "aliases" : [ "CVE-2026-64228" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethtool: phy: avoid NULL deref when PHY driver is unbound\n\nphydev->drv can become NULL while the phy_device is still attached to\nits net_device, namely after the PHY driver is unbound via sysfs:\n\n\techo <mdio_id> > /sys/bus/mdio_bus/drivers/<phy_drv>/unbind\n\nphy_remove() clears phydev->drv but doesn't call phy_detach(), so the\nphy_device stays in the link topology xarray and ethnl_req_get_phydev()\nstill hands it back. ETHTOOL_MSG_PHY_GET then oopses on:\n\n\trep_data->drvname = kstrdup(phydev->drv->name, GFP_KERNEL);\n\ndrvname is already treated as optional by phy_reply_size(),\nphy_fill_reply() and phy_cleanup_data(), so just skip the allocation\nwhen there is no driver bound.",
  "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-2026-64228"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/17fe2381f967d353183f374a1c0181a6d194158c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3586924625559e6f9876d726c80ff0a75f0d5849"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e3adf69f8eb121a9128c2b0029efd050d3649153"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-24T16:16:51Z"
  }
}