CVE-2026-43398: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-wv9h-grcg-85wc
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CVSS 5.5
Published
Advisory Summary

CVE-2026-43398 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43398 at a Glance

CVE Identifier CVE-2026-43398
GHSA Identifier GHSA-wv9h-grcg-85wc
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification General Security Weakness
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-2026-43398

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-2026-43398, 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: drm/amdgpu: add upper bound check on user inputs in wait ioctl Huge input values in amdgpu_userq_wait_ioctl can lead to a OOM and could be exploited. So check these input value against AMDGPU_USERQ_MAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM. v2: squash in Srini's fix (cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)

References

NVD — CVE-2026-43398 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43398
git.kernel.org/stable/c/3cd93bc695... WEB
https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a
git.kernel.org/stable/c/64ac7c09fc... WEB
https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613
git.kernel.org/stable/c/b1d10508da... WEB
https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1

Frequently Asked Questions

What is CVE-2026-43398?
CVE-2026-43398 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-2026-43398?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43398?
CVE-2026-43398 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-2026-43398?
CVE-2026-43398 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-43398?
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-wv9h-grcg-85wc",
  "modified" : "2026-05-21T21:30:29Z",
  "published" : "2026-05-08T15:31:27Z",
  "aliases" : [ "CVE-2026-43398" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: add upper bound check on user inputs in wait ioctl\n\nHuge input values in amdgpu_userq_wait_ioctl can lead to a OOM and\ncould be exploited.\n\nSo check these input value against AMDGPU_USERQ_MAX_HANDLES\nwhich is big enough value for genuine use cases and could\npotentially avoid OOM.\n\nv2: squash in Srini's fix\n\n(cherry picked from commit fcec012c664247531aed3e662f4280ff804d1476)",
  "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-2026-43398"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3cd93bc695b3456f26f5ed52753d9071da26202a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/64ac7c09fc44985ec9bb6a9db740899fa40ca613"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b1d10508da559da2e0ca9cca6505094a7df948e1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T15:16:51Z"
  }
}