CVE-2026-98031: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-22qv-h2jq-2xcf
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Advisory Summary

CVE-2026-98031 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-2026-98031 at a Glance

CVE Identifier CVE-2026-98031
GHSA Identifier GHSA-22qv-h2jq-2xcf
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-2026-98031

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-2026-98031, 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: nexthop: Initialize extack in remove_nh_grp_entry() remove_nh_grp_entry() prints the extack message when a listener fails to replace the reduced nexthop group. However, extack is not initialized and listeners are not required to set a message when returning an error. Neither netdevsim nor mlxsw do so when an allocation fails, resulting in the dereference of an uninitialized stack pointer. Fix by zero-initializing extack, as was done in commit 6347c5314cee ("nexthop: initialize extack in nh_res_bucket_migrate()").

References

NVD — CVE-2026-98031 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98031
git.kernel.org/stable/c/030c878eae... WEB
https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e
git.kernel.org/stable/c/17acbcd4c5... WEB
https://git.kernel.org/stable/c/17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a
git.kernel.org/stable/c/35d9ec6146... WEB
https://git.kernel.org/stable/c/35d9ec61466109ef0c2de87067338d929f629527
git.kernel.org/stable/c/5bd9e4e7cd... WEB
https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b
git.kernel.org/stable/c/704319510a... WEB
https://git.kernel.org/stable/c/704319510af2179cf03955747d714ab291075c25
git.kernel.org/stable/c/d643cea424... WEB
https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9
git.kernel.org/stable/c/d80677ad7a... WEB
https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561

Frequently Asked Questions

What is CVE-2026-98031?
CVE-2026-98031 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-2026-98031?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98031?
CVE-2026-98031 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98031?
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-22qv-h2jq-2xcf",
  "modified" : "2026-10-03T12:31:25Z",
  "published" : "2026-09-25T12:31:33Z",
  "aliases" : [ "CVE-2026-98031" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnexthop: Initialize extack in remove_nh_grp_entry()\n\nremove_nh_grp_entry() prints the extack message when a listener fails\nto replace the reduced nexthop group. However, extack is not\ninitialized and listeners are not required to set a message when\nreturning an error. Neither netdevsim nor mlxsw do so when an\nallocation fails, resulting in the dereference of an uninitialized\nstack pointer.\n\nFix by zero-initializing extack, as was done in commit 6347c5314cee\n(\"nexthop: initialize extack in nh_res_bucket_migrate()\").",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98031"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/17acbcd4c5a6ca3dd3f9e52eb203c9175bde609a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/35d9ec61466109ef0c2de87067338d929f629527"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/704319510af2179cf03955747d714ab291075c25"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:31Z"
  }
}