CVE-2026-64222: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-xhjp-r5qg-3389
Share
CVSS 7.0
CWE-415
Published
Advisory Summary

CVE-2026-64222 is a HIGH (CVSS 7.0) security vulnerability vulnerability (CWE-415: Double Free) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product calls free() twice on the same memory address.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64222 at a Glance

CVE Identifier CVE-2026-64222
GHSA Identifier GHSA-xhjp-r5qg-3389
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-415: Double Free
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-64222

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-2026-64222, 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-415: Double Free, where the product calls free() twice on the same memory address. 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: octeontx2-pf: avoid double free of pool->stack on AQ init failure otx2_pool_aq_init() frees pool->stack when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later, otx2_sq_aura_pool_init() unwinds the partial setup through otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific cn20k_pool_aq_init() implementation has the same bug in its corresponding error path. Set pool->stack to NULL immediately after the local free so the shared cleanup path does not free the same stack again while cleaning up partially initialized pool state. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3. Runtime validation was not performed because reproducing this path requires OcteonTX2/CN20K hardware.

References

NVD — CVE-2026-64222 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64222
git.kernel.org/stable/c/0488a0bb34... WEB
https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74
git.kernel.org/stable/c/0d9b9d7dbe... WEB
https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea
git.kernel.org/stable/c/4c29603498... WEB
https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7
git.kernel.org/stable/c/94192b0579... WEB
https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b
git.kernel.org/stable/c/9b244c242b... WEB
https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1
git.kernel.org/stable/c/b92e7ea408... WEB
https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300
git.kernel.org/stable/c/c4b8c5d516... WEB
https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec
git.kernel.org/stable/c/e6e9bc0bf9... WEB
https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4

Frequently Asked Questions

What is CVE-2026-64222?
CVE-2026-64222 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-415: Double Free.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64222?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64222?
CVE-2026-64222 has a CVSS v3.1 base score of 7.0 (HIGH) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-64222?
CVE-2026-64222 is classified under CWE-415: Double Free (The product calls free() twice on the same memory address.).
How can I check Maven dependencies for CVE-2026-64222?
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-xhjp-r5qg-3389",
  "modified" : "2026-07-27T06:30:30Z",
  "published" : "2026-07-24T18:31:27Z",
  "aliases" : [ "CVE-2026-64222" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: avoid double free of pool->stack on AQ init failure\n\notx2_pool_aq_init() frees pool->stack when mailbox sync or retry\nallocation fails, but leaves the pointer unchanged. Later,\notx2_sq_aura_pool_init() unwinds the partial setup through\notx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific\ncn20k_pool_aq_init() implementation has the same bug in\nits corresponding error path.\n\nSet pool->stack to NULL immediately after the local free so the shared\ncleanup path does not free the same stack again while cleaning up\npartially initialized pool state.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nv7.1-rc3.\n\nRuntime validation was not performed because reproducing this path\nrequires OcteonTX2/CN20K hardware.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64222"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-415" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-24T16:16:50Z"
  }
}