CVE-2026-43424: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-rx37-q58j-c4c7
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-43424 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-2026-43424 at a Glance

CVE Identifier CVE-2026-43424
GHSA Identifier GHSA-rx37-q58j-c4c7
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-2026-43424

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-2026-43424, 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: usb: gadget: f_tcm: Fix NULL pointer dereferences in nexus handling The `tpg->tpg_nexus` pointer in the USB Target driver is dynamically managed and tied to userspace configuration via ConfigFS. It can be NULL if the USB host sends requests before the nexus is fully established or immediately after it is dropped. Currently, functions like `bot_submit_command()` and the data transfer paths retrieve `tv_nexus = tpg->tpg_nexus` and immediately dereference `tv_nexus->tvn_se_sess` without any validation. If a malicious or misconfigured USB host sends a BOT (Bulk-Only Transport) command during this race window, it triggers a NULL pointer dereference, leading to a kernel panic (local DoS). This exposes an inconsistent API usage within the module, as peer functions like `usbg_submit_command()` and `bot_send_bad_response()` correctly implement a NULL check for `tv_nexus` before proceeding. Fix this by bringing consistency to the nexus handling. Add the missing `if (!tv_nexus)` checks to the vulnerable BOT command and request processing paths, aborting the command gracefully with an error instead of crashing the system.

References

NVD — CVE-2026-43424 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43424
git.kernel.org/stable/c/2a2ef846a5... WEB
https://git.kernel.org/stable/c/2a2ef846a54a06c33b5c2d4b0d918583e1e7c0b7
git.kernel.org/stable/c/3d309b3763... WEB
https://git.kernel.org/stable/c/3d309b37633c4a847fc149939a2c9576f1aa1065
git.kernel.org/stable/c/679d9535ae... WEB
https://git.kernel.org/stable/c/679d9535aeb15c10bce89c44102004b96624d706
git.kernel.org/stable/c/b9b26d7f3a... WEB
https://git.kernel.org/stable/c/b9b26d7f3aa288cfa54a7bc68612bab1f153f156
git.kernel.org/stable/c/b9fde50735... WEB
https://git.kernel.org/stable/c/b9fde507355342a2d64225d582dc8b98ff5ecb19
git.kernel.org/stable/c/d146f27758... WEB
https://git.kernel.org/stable/c/d146f27758049fa55ae4c53785a852d3cf7a18d6
git.kernel.org/stable/c/f962ca3b02... WEB
https://git.kernel.org/stable/c/f962ca3b020e13d6714f27e8c36fe742441c58d1

Frequently Asked Questions

What is CVE-2026-43424?
CVE-2026-43424 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-2026-43424?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43424?
CVE-2026-43424 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-2026-43424?
CVE-2026-43424 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-2026-43424?
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-rx37-q58j-c4c7",
  "modified" : "2026-05-20T21:31:28Z",
  "published" : "2026-05-08T15:31:28Z",
  "aliases" : [ "CVE-2026-43424" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_tcm: Fix NULL pointer dereferences in nexus handling\n\nThe `tpg->tpg_nexus` pointer in the USB Target driver is dynamically\nmanaged and tied to userspace configuration via ConfigFS. It can be\nNULL if the USB host sends requests before the nexus is fully\nestablished or immediately after it is dropped.\n\nCurrently, functions like `bot_submit_command()` and the data\ntransfer paths retrieve `tv_nexus = tpg->tpg_nexus` and immediately\ndereference `tv_nexus->tvn_se_sess` without any validation. If a\nmalicious or misconfigured USB host sends a BOT (Bulk-Only Transport)\ncommand during this race window, it triggers a NULL pointer\ndereference, leading to a kernel panic (local DoS).\n\nThis exposes an inconsistent API usage within the module, as peer\nfunctions like `usbg_submit_command()` and `bot_send_bad_response()`\ncorrectly implement a NULL check for `tv_nexus` before proceeding.\n\nFix this by bringing consistency to the nexus handling. Add the\nmissing `if (!tv_nexus)` checks to the vulnerable BOT command and\nrequest processing paths, aborting the command gracefully with an\nerror instead of crashing the system.",
  "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-2026-43424"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2a2ef846a54a06c33b5c2d4b0d918583e1e7c0b7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3d309b37633c4a847fc149939a2c9576f1aa1065"
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b9b26d7f3aa288cfa54a7bc68612bab1f153f156"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b9fde507355342a2d64225d582dc8b98ff5ecb19"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d146f27758049fa55ae4c53785a852d3cf7a18d6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f962ca3b020e13d6714f27e8c36fe742441c58d1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T15:16:54Z"
  }
}