CVE-2026-64420: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-wgwq-6fx3-368g
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CVSS 7.0
CWE-476 CWE-416
Published
Advisory Summary

CVE-2026-64420 is a HIGH (CVSS 7.0) 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-2026-64420 at a Glance

CVE Identifier CVE-2026-64420
GHSA Identifier GHSA-wgwq-6fx3-368g
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-476: NULL Pointer Dereference
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-2026-64420

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-2026-64420, 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: mfd: cros_ec: Delay dev_set_drvdata() until probe success If ec_device_probe() fails, cros_ec_class_release releases memory for the cros_ec_dev structure. However, because the drvdata was already set, sub-drivers like cros_ec_typec can still retrieve the stale pointer via the platform device. This leads to a use-after-free when cros_ec_typec attempts to access &typec->ec->ec->dev on a device that has already been released. Move dev_set_drvdata() to ensure that the pointer is only made available once all initialization steps have succeeded. sysfs: cannot create duplicate filename '/class/chromeos/cros_ec' Call trace: sysfs_do_create_link_sd+0x94/0xdc sysfs_create_link+0x30/0x44 device_add_class_symlinks+0x90/0x13c device_add+0xf0/0x50c ec_device_probe+0x150/0x4f0 platform_probe+0xa0/0xe0 ... BUG: KASAN: invalid-access in __memcpy+0x44/0x230 Write at addr f5ffff809e2d33ac by task kworker/u32:5/125 Pointer tag: [f5], memory tag: [fe] Tainted : [W]=WARN, [O]=OOT_MODULE Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3 Workqueue: events_unbound deferred_probe_work_func Call trace: __memcpy+0x44/0x230 cros_ec_check_features+0x60/0xcc [cros_ec_proto] cros_typec_probe+0xe8/0x6e0 [cros_ec_typec] platform_probe+0xa0/0xe0

References

NVD — CVE-2026-64420 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64420
git.kernel.org/stable/c/2452271303... WEB
https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6
git.kernel.org/stable/c/257203d832... WEB
https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117
git.kernel.org/stable/c/729ae27dc2... WEB
https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0
git.kernel.org/stable/c/8b2c1d41bc... WEB
https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a
git.kernel.org/stable/c/b5f41d5bf0... WEB
https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d
git.kernel.org/stable/c/ed2941e5db... WEB
https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa
git.kernel.org/stable/c/f7e81dc181... WEB
https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091
git.kernel.org/stable/c/fc030c5b11... WEB
https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665

Frequently Asked Questions

What is CVE-2026-64420?
CVE-2026-64420 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-2026-64420?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64420?
CVE-2026-64420 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-2026-64420?
CVE-2026-64420 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-2026-64420?
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-wgwq-6fx3-368g",
  "modified" : "2026-07-27T06:30:36Z",
  "published" : "2026-07-25T12:31:35Z",
  "aliases" : [ "CVE-2026-64420" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: cros_ec: Delay dev_set_drvdata() until probe success\n\nIf ec_device_probe() fails, cros_ec_class_release releases memory for the\ncros_ec_dev structure. However, because the drvdata was already set,\nsub-drivers like cros_ec_typec can still retrieve the stale pointer via the\nplatform device. This leads to a use-after-free when cros_ec_typec attempts\nto access &typec->ec->ec->dev on a device that has already been released.\nMove dev_set_drvdata() to ensure that the pointer is only made available\nonce all initialization steps have succeeded.\n\n sysfs: cannot create duplicate filename '/class/chromeos/cros_ec'\n Call trace:\n  sysfs_do_create_link_sd+0x94/0xdc\n  sysfs_create_link+0x30/0x44\n  device_add_class_symlinks+0x90/0x13c\n  device_add+0xf0/0x50c\n  ec_device_probe+0x150/0x4f0\n  platform_probe+0xa0/0xe0\n ...\n BUG: KASAN: invalid-access in __memcpy+0x44/0x230\n Write at addr f5ffff809e2d33ac by task kworker/u32:5/125\n Pointer tag: [f5], memory tag: [fe]\n Tainted : [W]=WARN, [O]=OOT_MODULE\n Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n  __memcpy+0x44/0x230\n  cros_ec_check_features+0x60/0xcc [cros_ec_proto]\n  cros_typec_probe+0xe8/0x6e0 [cros_ec_typec]\n  platform_probe+0xa0/0xe0",
  "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-2026-64420"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416", "CWE-476" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-25T10:17:25Z"
  }
}