CVE-2026-98568: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-489c-q3cc-mm5r
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Advisory Summary

CVE-2026-98568 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-2026-98568 at a Glance

CVE Identifier CVE-2026-98568
GHSA Identifier GHSA-489c-q3cc-mm5r
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-2026-98568

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-2026-98568, 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: vxlan: use one headroom snapshot for neighbour replies vxlan_na_create() samples LL_RESERVED_SPACE() to size the reply skb and then samples it again to reserve headroom. A concurrent vxlan_changelink() can update needed_headroom between the two reads, creating a TOCTOU race. The second value can exceed the allocation and make the Ethernet header write out of bounds. The race is reproducible on the unpatched kernel. It occurred when vxlan_na_create() generated a neighbour reply while vxlan_changelink() changed the link headroom. KASAN caught a four-byte write two bytes beyond a 704-byte skbuff_small_head allocation. Snapshot the headroom once and use that value for both allocation and reservation.

References

NVD — CVE-2026-98568 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98568
git.kernel.org/stable/c/315d42ca39... WEB
https://git.kernel.org/stable/c/315d42ca39f69846662961c25dcf2bb07c350d14
git.kernel.org/stable/c/45a67662bf... WEB
https://git.kernel.org/stable/c/45a67662bf8ce3aa5643accf98d328dfbb47eaf6
git.kernel.org/stable/c/481506a756... WEB
https://git.kernel.org/stable/c/481506a756dcd828ef42391cb08f38d8d96d38fc
git.kernel.org/stable/c/a3c5eb6e38... WEB
https://git.kernel.org/stable/c/a3c5eb6e382dd426a5e7eb08608897ed57167ff7
git.kernel.org/stable/c/ff022fd9d0... WEB
https://git.kernel.org/stable/c/ff022fd9d0f0282c575e11778b96bd1b637503eb

Frequently Asked Questions

What is CVE-2026-98568?
CVE-2026-98568 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-2026-98568?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98568?
CVE-2026-98568 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98568?
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-489c-q3cc-mm5r",
  "modified" : "2026-10-18T18:31:54Z",
  "published" : "2026-10-18T18:31:54Z",
  "aliases" : [ "CVE-2026-98568" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use one headroom snapshot for neighbour replies\n\nvxlan_na_create() samples LL_RESERVED_SPACE() to size the reply skb and then\nsamples it again to reserve headroom. A concurrent vxlan_changelink() can\nupdate needed_headroom between the two reads, creating a TOCTOU race. The\nsecond value can exceed the allocation and make the Ethernet header write out\nof bounds.\n\nThe race is reproducible on the unpatched kernel. It occurred when\nvxlan_na_create() generated a neighbour reply while vxlan_changelink() changed\nthe link headroom. KASAN caught a four-byte write two bytes beyond a 704-byte\nskbuff_small_head allocation.\n\nSnapshot the headroom once and use that value for both allocation and\nreservation.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98568"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/315d42ca39f69846662961c25dcf2bb07c350d14"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/45a67662bf8ce3aa5643accf98d328dfbb47eaf6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/481506a756dcd828ef42391cb08f38d8d96d38fc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a3c5eb6e382dd426a5e7eb08608897ed57167ff7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ff022fd9d0f0282c575e11778b96bd1b637503eb"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:09Z"
  }
}