CVE-2026-64056: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-h3jw-23r7-cv6p
Share
CVSS 9.8
Published
Advisory Summary

CVE-2026-64056 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64056 at a Glance

CVE Identifier CVE-2026-64056
GHSA Identifier GHSA-h3jw-23r7-cv6p
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-64056

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-2026-64056, 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: net: ethernet: cortina: Make RX SKB per-port The SKB used to assemble packets from fragments in gmac_rx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both. Make the RX SKB a per-port variable and carry it over between invocations in the port struct instead. Zero the pointer once we call napi_gro_frags(), on error (after calling napi_free_frags()) or if the port is stopped. Zero it in some place where not strictly necessary just to emphasize what is going on. This was found by Sashiko during normal patch review.

References

NVD — CVE-2026-64056 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64056
git.kernel.org/stable/c/06937db21e... WEB
https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d
git.kernel.org/stable/c/27856d533e... WEB
https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b
git.kernel.org/stable/c/3b249988d7... WEB
https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4
git.kernel.org/stable/c/67a35e7da7... WEB
https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0
git.kernel.org/stable/c/6bba24e9eb... WEB
https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897
git.kernel.org/stable/c/72158ea185... WEB
https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55
git.kernel.org/stable/c/b6b22824b3... WEB
https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50
git.kernel.org/stable/c/cfd62907f3... WEB
https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e

Frequently Asked Questions

What is CVE-2026-64056?
CVE-2026-64056 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-2026-64056?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64056?
CVE-2026-64056 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-64056?
CVE-2026-64056 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64056?
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-h3jw-23r7-cv6p",
  "modified" : "2026-07-20T15:31:57Z",
  "published" : "2026-07-19T18:31:50Z",
  "aliases" : [ "CVE-2026-64056" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Make RX SKB per-port\n\nThe SKB used to assemble packets from fragments in gmac_rx()\nis static local, but the Gemini has two ethernet ports, meaning\nthere can be races between the ports on a bad day if a device\nis using both.\n\nMake the RX SKB a per-port variable and carry it over between\ninvocations in the port struct instead.\n\nZero the pointer once we call napi_gro_frags(), on error (after\ncalling napi_free_frags()) or if the port is stopped.\n\nZero it in some place where not strictly necessary just to\nemphasize what is going on.\n\nThis was found by Sashiko during normal patch review.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64056"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:46Z"
  }
}