CVE-2026-64219: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-gjfp-5cfr-xp55
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CVSS 7.0
CWE-121 CWE-674
Published
Advisory Summary

CVE-2026-64219 is a HIGH (CVSS 7.0) security vulnerability vulnerability (CWE-121: Stack-based Buffer Overflow) affecting Software libraries in the Maven ecosystem. The weakness occurs when a stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64219 at a Glance

CVE Identifier CVE-2026-64219
GHSA Identifier GHSA-gjfp-5cfr-xp55
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-121: Stack-based Buffer Overflow
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-2026-64219

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-2026-64219, 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-121: Stack-based Buffer Overflow, where a stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). 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: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async [Why&How] dc_process_dmub_aux_transfer_async() copies payload->length bytes into a 16-byte stack buffer (dpaux.data[16]) guarded only by an ASSERT(), which is a no-op in release builds. If a caller ever passes length > 16 this results in a stack buffer overflow via memcpy. Additionally, link_index is used to dereference dc->links[] without bounds checking against dc->link_count, risking an out-of-bounds access. Replace the ASSERT with a hard runtime check that returns false when payload->length exceeds the destination buffer size, and add a bounds check for link_index before it is used. (cherry picked from commit ba4caa9fecdf7a38f98c878ad05a8a64148b6881)

References

NVD — CVE-2026-64219 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64219
git.kernel.org/stable/c/16a5fa5756... WEB
https://git.kernel.org/stable/c/16a5fa57565afb6bf37e18129921c270c93d8e2b
git.kernel.org/stable/c/1c8c6e912f... WEB
https://git.kernel.org/stable/c/1c8c6e912f2945b2a3e669afca6b52174b88e86e
git.kernel.org/stable/c/1ecde19bfc... WEB
https://git.kernel.org/stable/c/1ecde19bfce6535bffddad1139ff466b6d401b8e
git.kernel.org/stable/c/3265f3ed37... WEB
https://git.kernel.org/stable/c/3265f3ed373fb8048be713aadcdf702579a0e53d
git.kernel.org/stable/c/6c92f6d960... WEB
https://git.kernel.org/stable/c/6c92f6d9600efa3ef0d9e560a2b52776d9803c29
git.kernel.org/stable/c/90c398e822... WEB
https://git.kernel.org/stable/c/90c398e822ca76e40548df0c061dd4f93ea92d71
git.kernel.org/stable/c/d6590e3f76... WEB
https://git.kernel.org/stable/c/d6590e3f766e3111dd1beaf88b9384d117acfa6b

Frequently Asked Questions

What is CVE-2026-64219?
CVE-2026-64219 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-121: Stack-based Buffer Overflow.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64219?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64219?
CVE-2026-64219 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-2026-64219?
CVE-2026-64219 is classified under CWE-121: Stack-based Buffer Overflow (A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).).
How can I check Maven dependencies for CVE-2026-64219?
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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-gjfp-5cfr-xp55",
  "modified" : "2026-07-27T06:30:30Z",
  "published" : "2026-07-24T18:31:27Z",
  "aliases" : [ "CVE-2026-64219" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async\n\n[Why&How]\ndc_process_dmub_aux_transfer_async() copies payload->length bytes into a\n16-byte stack buffer (dpaux.data[16]) guarded only by an ASSERT(), which\nis a no-op in release builds. If a caller ever passes length > 16 this\nresults in a stack buffer overflow via memcpy.\n\nAdditionally, link_index is used to dereference dc->links[] without\nbounds checking against dc->link_count, risking an out-of-bounds access.\n\nReplace the ASSERT with a hard runtime check that returns false when\npayload->length exceeds the destination buffer size, and add a bounds\ncheck for link_index before it is used.\n\n(cherry picked from commit ba4caa9fecdf7a38f98c878ad05a8a64148b6881)",
  "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-2026-64219"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/16a5fa57565afb6bf37e18129921c270c93d8e2b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1c8c6e912f2945b2a3e669afca6b52174b88e86e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1ecde19bfce6535bffddad1139ff466b6d401b8e"
  }, {
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  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/90c398e822ca76e40548df0c061dd4f93ea92d71"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d6590e3f766e3111dd1beaf88b9384d117acfa6b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-121", "CWE-674" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-24T16:16:49Z"
  }
}