CVE-2026-90066: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-h42m-cfhq-9g8c
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Advisory Summary

CVE-2026-90066 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-2026-90066 at a Glance

CVE Identifier CVE-2026-90066
GHSA Identifier GHSA-h42m-cfhq-9g8c
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-2026-90066

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-2026-90066, 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: samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify ftrace_direct_multi_init() assigns kthread_run()'s return value to simple_tsk without an IS_ERR() check. When kthread_run() fails it returns ERR_PTR(-ENOMEM), but init still returns 0, so the module loads with simple_tsk holding an error pointer. On unload, ftrace_direct_multi_exit() then passes that ERR_PTR to kthread_stop(), leading to a null-pointer-dereference. Check the return value of kthread_run() with IS_ERR(); on failure, unregister the ftrace direct call and propagate the error code.

References

NVD — CVE-2026-90066 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90066
git.kernel.org/stable/c/626614df90... WEB
https://git.kernel.org/stable/c/626614df9080d7052fbe24dc90b5434717ab7a9f
git.kernel.org/stable/c/6727b7618f... WEB
https://git.kernel.org/stable/c/6727b7618f49401acf373fa3ec5712e2ec52e5cf
git.kernel.org/stable/c/7a96b9f6d5... WEB
https://git.kernel.org/stable/c/7a96b9f6d5ba23dbce66c8a4a242effd4c01a830
git.kernel.org/stable/c/98b7b2a29a... WEB
https://git.kernel.org/stable/c/98b7b2a29ae87937aa02ab9391543ef8c602cd94
git.kernel.org/stable/c/cf83963691... WEB
https://git.kernel.org/stable/c/cf839636911d8313f3ecd098329fd0b96499e4cf

Frequently Asked Questions

What is CVE-2026-90066?
CVE-2026-90066 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-2026-90066?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90066?
CVE-2026-90066 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90066?
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-h42m-cfhq-9g8c",
  "modified" : "2026-09-17T18:31:49Z",
  "published" : "2026-09-17T18:31:49Z",
  "aliases" : [ "CVE-2026-90066" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsamples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify\n\nftrace_direct_multi_init() assigns kthread_run()'s return value to\nsimple_tsk without an IS_ERR() check. When kthread_run() fails it\nreturns ERR_PTR(-ENOMEM), but init still returns 0, so the module loads\nwith simple_tsk holding an error pointer. On unload,\nftrace_direct_multi_exit() then passes that ERR_PTR to kthread_stop(),\nleading to a null-pointer-dereference.\n\nCheck the return value of kthread_run() with IS_ERR(); on failure,\nunregister the ftrace direct call and propagate the error code.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90066"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/626614df9080d7052fbe24dc90b5434717ab7a9f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6727b7618f49401acf373fa3ec5712e2ec52e5cf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7a96b9f6d5ba23dbce66c8a4a242effd4c01a830"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/98b7b2a29ae87937aa02ab9391543ef8c602cd94"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cf839636911d8313f3ecd098329fd0b96499e4cf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:16:55Z"
  }
}