CVE-2026-98440: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-f55r-7vvq-j4jq
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Advisory Summary

CVE-2026-98440 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-2026-98440 at a Glance

CVE Identifier CVE-2026-98440
GHSA Identifier GHSA-f55r-7vvq-j4jq
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-2026-98440

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-2026-98440, 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: KVM: arm64: nv: Delay freeing of shadow S2 structures until VM destruction We free the shadow S2 structures from kvm_arch_flush_shadow_all(), which is a Bad Idea(tm). Freeing the page tables is fair game (this is what this callback is for), but freeing the container that could still be referenced by another part of the system is not great. Instead, grow separate destructors that gets called when we tear the VM down for good. From there, we can nuke both the individual MMUs as well as the global array that points to them, safe in the knowledge that the vcpus themselves have been destroyed already.

References

NVD — CVE-2026-98440 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98440
git.kernel.org/stable/c/22e82acec9... WEB
https://git.kernel.org/stable/c/22e82acec93a681071ed36f70eabe2d0c4e0bebd
git.kernel.org/stable/c/5bf1c9175e... WEB
https://git.kernel.org/stable/c/5bf1c9175e657b3c2dc1cf77403031ac7aadcf66
git.kernel.org/stable/c/876049f026... WEB
https://git.kernel.org/stable/c/876049f026b4dfaca0cc78ec81be0e639ca8525d
git.kernel.org/stable/c/e5843f4eff... WEB
https://git.kernel.org/stable/c/e5843f4effaa2ffac3e789ecd4456403564961d4

Frequently Asked Questions

What is CVE-2026-98440?
CVE-2026-98440 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-2026-98440?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98440?
CVE-2026-98440 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98440?
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-f55r-7vvq-j4jq",
  "modified" : "2026-10-18T18:31:49Z",
  "published" : "2026-10-18T18:31:49Z",
  "aliases" : [ "CVE-2026-98440" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: nv: Delay freeing of shadow S2 structures until VM destruction\n\nWe free the shadow S2 structures from kvm_arch_flush_shadow_all(), which\nis a Bad Idea(tm). Freeing the page tables is fair game (this is what\nthis callback is for), but freeing the container that could still be\nreferenced by another part of the system is not great.\n\nInstead, grow separate destructors that gets called when we tear the VM\ndown for good. From there, we can nuke both the individual MMUs as well\nas the global array that points to them, safe in the knowledge that the\nvcpus themselves have been destroyed already.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98440"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/22e82acec93a681071ed36f70eabe2d0c4e0bebd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5bf1c9175e657b3c2dc1cf77403031ac7aadcf66"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/876049f026b4dfaca0cc78ec81be0e639ca8525d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e5843f4effaa2ffac3e789ecd4456403564961d4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:16:54Z"
  }
}