CVE-2026-64477: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-72f8-7m2r-7r88
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Advisory Summary

CVE-2026-64477 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64477 at a Glance

CVE Identifier CVE-2026-64477
GHSA Identifier GHSA-72f8-7m2r-7r88
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-64477

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-2026-64477, 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: x86,fs/resctrl: Prevent out-of-bounds access while offlining CPU when SNC enabled The architecture updates the cpu_mask in a domain's header to track which online CPUs are associated with the domain. When this mask becomes empty the architecture initiates offline of the domain that includes calling on resctrl fs to offline the domain. If it is a monitoring domain in which LLC occupancy is tracked resctrl fs forces the limbo handler to clear all busy RMID state associated with the domain. The limbo handler always reads the current event value associated with a busy RMID irrespective of it being checked as part of regular "is it still busy" check or whether it will be forced released anyway. When reading an RMID on a system with SNC enabled the "logical RMID" is converted to the "physical RMID" and this conversion requires the NUMA node ID of the resctrl monitoring domain that is in turn determined by querying the NUMA node ID of any CPU belonging to the monitoring domain. When the monitoring domain is going offline its cpu_mask is empty causing the NUMA node ID query via cpu_to_node() to be done with "nr_cpu_ids" as argument resulting in an out-of-bounds access. Refactor the limbo handler to skip reading the RMID when the RMID will just be forced to no longer be dirty in the domain anyway. Add a safety check to the architecture's RMID reader to protect against this scenario.

References

NVD — CVE-2026-64477 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64477
git.kernel.org/stable/c/58c5ec23b1... WEB
https://git.kernel.org/stable/c/58c5ec23b1a238eb75cb0aba6f69d8f9e68ef0b2
git.kernel.org/stable/c/be15679924... WEB
https://git.kernel.org/stable/c/be1567992417dc92133e74126de7a6066c825ac9
git.kernel.org/stable/c/ebc300b7ee... WEB
https://git.kernel.org/stable/c/ebc300b7ee0c669fa76a7a8858298ff32e296103
git.kernel.org/stable/c/fc16126cc1... WEB
https://git.kernel.org/stable/c/fc16126cc11d9f507130bf84ab137ee0938c900e

Frequently Asked Questions

What is CVE-2026-64477?
CVE-2026-64477 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-2026-64477?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-64477?
CVE-2026-64477 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64477?
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-72f8-7m2r-7r88",
  "modified" : "2026-07-25T12:31:37Z",
  "published" : "2026-07-25T12:31:37Z",
  "aliases" : [ "CVE-2026-64477" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nx86,fs/resctrl: Prevent out-of-bounds access while offlining CPU when SNC enabled\n\nThe architecture updates the cpu_mask in a domain's header to track which\nonline CPUs are associated with the domain. When this mask becomes empty\nthe architecture initiates offline of the domain that includes calling\non resctrl fs to offline the domain. If it is a monitoring domain in\nwhich LLC occupancy is tracked resctrl fs forces the limbo handler to\nclear all busy RMID state associated with the domain.\n\nThe limbo handler always reads the current event value associated with a\nbusy RMID irrespective of it being checked as part of regular \"is it still\nbusy\" check or whether it will be forced released anyway. When reading an\nRMID on a system with SNC enabled the \"logical RMID\" is converted to the\n\"physical RMID\" and this conversion requires the NUMA node ID of the\nresctrl monitoring domain that is in turn determined by querying the NUMA\nnode ID of any CPU belonging to the monitoring domain.\n\nWhen the monitoring domain is going offline its cpu_mask is empty causing\nthe NUMA node ID query via cpu_to_node() to be done with \"nr_cpu_ids\" as\nargument resulting in an out-of-bounds access.\n\nRefactor the limbo handler to skip reading the RMID when the RMID will\njust be forced to no longer be dirty in the domain anyway. Add a safety\ncheck to the architecture's RMID reader to protect against this scenario.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64477"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/58c5ec23b1a238eb75cb0aba6f69d8f9e68ef0b2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/be1567992417dc92133e74126de7a6066c825ac9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ebc300b7ee0c669fa76a7a8858298ff32e296103"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fc16126cc11d9f507130bf84ab137ee0938c900e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-25T10:17:33Z"
  }
}