CVE-2026-64568: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c46h-f4qf-6cmr
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CVSS 7.8
Published
Advisory Summary

CVE-2026-64568 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64568 at a Glance

CVE Identifier CVE-2026-64568
GHSA Identifier GHSA-c46h-f4qf-6cmr
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-64568

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-2026-64568, 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: wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure ieee80211_set_unsol_bcast_probe_resp() calls kfree_rcu() on the old template before allocating the replacement. If the kzalloc() then fails, it returns -ENOMEM while link->u.ap.unsol_bcast_probe_resp still points at the object already queued for freeing. A later update or AP teardown re-queues that same rcu_head; the second free is caught by KASAN when the RCU sheaf is processed in softirq: BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850) Free of addr ffff88800d06f300 by task exploit/145 ... __rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940) rcu_free_sheaf (mm/slub.c:5850) rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869) handle_softirqs (kernel/softirq.c:622) The buggy address belongs to the cache kmalloc-128 of size 128 Queue the old object for kfree_rcu() only after the new one is published, matching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().

References

NVD — CVE-2026-64568 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64568
git.kernel.org/stable/c/0ace76e410... WEB
https://git.kernel.org/stable/c/0ace76e410d7f7d813b605825a3e593a79c3958f
git.kernel.org/stable/c/1d067abcd3... WEB
https://git.kernel.org/stable/c/1d067abcd37062426c59ec73dbc4e87a63f33fea
git.kernel.org/stable/c/ca27a81cd7... WEB
https://git.kernel.org/stable/c/ca27a81cd77b698e5eb586a011bee6800c7ee4bd
git.kernel.org/stable/c/d62b55b7c7... WEB
https://git.kernel.org/stable/c/d62b55b7c7dc62887d7fd5648fb38f0bfaef53ae

Frequently Asked Questions

What is CVE-2026-64568?
CVE-2026-64568 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-2026-64568?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64568?
CVE-2026-64568 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-64568?
CVE-2026-64568 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64568?
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-c46h-f4qf-6cmr",
  "modified" : "2026-08-08T15:30:24Z",
  "published" : "2026-08-05T09:31:17Z",
  "aliases" : [ "CVE-2026-64568" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure\n\nieee80211_set_unsol_bcast_probe_resp() calls kfree_rcu() on the old\ntemplate before allocating the replacement. If the kzalloc() then fails,\nit returns -ENOMEM while link->u.ap.unsol_bcast_probe_resp still points\nat the object already queued for freeing. A later update or AP teardown\nre-queues that same rcu_head; the second free is caught by KASAN when the\nRCU sheaf is processed in softirq:\n\n  BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850)\n  Free of addr ffff88800d06f300 by task exploit/145\n   ...\n   __rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940)\n   rcu_free_sheaf (mm/slub.c:5850)\n   rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869)\n   handle_softirqs (kernel/softirq.c:622)\n  The buggy address belongs to the cache kmalloc-128 of size 128\n\nQueue the old object for kfree_rcu() only after the new one is published,\nmatching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64568"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0ace76e410d7f7d813b605825a3e593a79c3958f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1d067abcd37062426c59ec73dbc4e87a63f33fea"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ca27a81cd77b698e5eb586a011bee6800c7ee4bd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d62b55b7c7dc62887d7fd5648fb38f0bfaef53ae"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-05T08:16:36Z"
  }
}