CVE-2026-93238: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-q4pw-hxg7-r6v7
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Advisory Summary

CVE-2026-93238 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-93238 at a Glance

CVE Identifier CVE-2026-93238
GHSA Identifier GHSA-q4pw-hxg7-r6v7
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-93238

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-2026-93238, 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 General Security Weakness. 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: s390/vfio-ap: fix potential use of uninitialized apm_filtered bitmap The DECLARE_BITMAP(apm_filtered, AP_DEVICES) macro allocates the bitmap on the stack without zero-initializing it. In vfio_ap_mdev_hot_plug_cfg(), the vfio_ap_mdev_filter_matrix() function is only called to initialize and populate apm_filtered if either filter_adapters or filter_domains is true. If the hot plug configuration change only adds control domains (meaning filter_cdoms is true, but filter_adapters and filter_domains are both false), vfio_ap_mdev_filter_matrix() is bypassed. Consequently, apm_filtered is passed to reset_queues_for_apids() with uninitialized stack garbage. This can cause reset_queues_for_apids() to interpret arbitrary stack garbage bits as valid APIDs to reset, potentially performing unintended guest hardware queue resets. Fix this by zero-initializing the apm_filtered bitmap at the beginning of vfio_ap_mdev_hot_plug_cfg() using bitmap_zero().

References

NVD — CVE-2026-93238 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93238
git.kernel.org/stable/c/09548edc61... WEB
https://git.kernel.org/stable/c/09548edc6114f1eb1035b30795e893204ef45b85
git.kernel.org/stable/c/4ba8a08f5f... WEB
https://git.kernel.org/stable/c/4ba8a08f5f26ed59f356a6318bca3aa7cc0af3e2
git.kernel.org/stable/c/6d554f2571... WEB
https://git.kernel.org/stable/c/6d554f2571e6b4db242593ba561efd6a6d1f99a9
git.kernel.org/stable/c/bf09b9d7cd... WEB
https://git.kernel.org/stable/c/bf09b9d7cd7890bc3a3b7eb63d5ece15f88bfde7
git.kernel.org/stable/c/f73db63252... WEB
https://git.kernel.org/stable/c/f73db632524320d2b93bc8534be8ea875053502d

Frequently Asked Questions

What is CVE-2026-93238?
CVE-2026-93238 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-93238?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93238?
CVE-2026-93238 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93238?
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-q4pw-hxg7-r6v7",
  "modified" : "2026-09-24T18:31:23Z",
  "published" : "2026-09-24T18:31:23Z",
  "aliases" : [ "CVE-2026-93238" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio-ap: fix potential use of uninitialized apm_filtered bitmap\n\nThe DECLARE_BITMAP(apm_filtered, AP_DEVICES) macro allocates the bitmap\non the stack without zero-initializing it.\n\nIn vfio_ap_mdev_hot_plug_cfg(), the vfio_ap_mdev_filter_matrix() function\nis only called to initialize and populate apm_filtered if either\nfilter_adapters or filter_domains is true. If the hot plug configuration\nchange only adds control domains (meaning filter_cdoms is true, but\nfilter_adapters and filter_domains are both false),\nvfio_ap_mdev_filter_matrix() is bypassed.\n\nConsequently, apm_filtered is passed to reset_queues_for_apids() with\nuninitialized stack garbage. This can cause reset_queues_for_apids() to\ninterpret arbitrary stack garbage bits as valid APIDs to reset, potentially\nperforming unintended guest hardware queue resets.\n\nFix this by zero-initializing the apm_filtered bitmap at the beginning of\nvfio_ap_mdev_hot_plug_cfg() using bitmap_zero().",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93238"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/09548edc6114f1eb1035b30795e893204ef45b85"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ba8a08f5f26ed59f356a6318bca3aa7cc0af3e2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6d554f2571e6b4db242593ba561efd6a6d1f99a9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bf09b9d7cd7890bc3a3b7eb63d5ece15f88bfde7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f73db632524320d2b93bc8534be8ea875053502d"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T16:17:19Z"
  }
}