CVE-2026-98400: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-v8v9-cp6p-qm5r
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Advisory Summary

CVE-2026-98400 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-2026-98400 at a Glance

CVE Identifier CVE-2026-98400
GHSA Identifier GHSA-v8v9-cp6p-qm5r
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-2026-98400

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-2026-98400, 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: s390/ipl: Fix NULL deref in kdump without re-IPL parm block Some IPL types, like HMC FTP boot or QEMU direct kernel boot, might not provide an IPL parameter block. In this case, reipl_type_init() selects IPL_TYPE_UNKNOWN, and reipl_block_actual remains NULL. kdump passes the re-IPL parameter block to the dump kernel through os_info. Before commit 3b9678472bab ("s390/ipl: correct kdump reipl block checksum calculation"), the os_info entry was added only for IPL types which initialized reipl_block_actual. That commit moved the os_info update to machine_crash_shutdown(), making it unconditional. As a result, set_os_info_reipl_block() dereferences reipl_block_actual for IPL_TYPE_UNKNOWN. This may happen to work by chance when address zero contains readable lowcore data and the resulting empty os_info entry is ignored by the dump kernel. Skip the os_info update when no re-IPL parameter block is available. Kdump then collect the dump and reboot without setting re-IPL parameter block.

References

NVD — CVE-2026-98400 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98400
git.kernel.org/stable/c/030e888124... WEB
https://git.kernel.org/stable/c/030e88812435fc5d6aa42eee41fa77b5ea620327
git.kernel.org/stable/c/50f9c40768... WEB
https://git.kernel.org/stable/c/50f9c40768e84f30d374235b3ee3850a94d9ac29
git.kernel.org/stable/c/7f91887111... WEB
https://git.kernel.org/stable/c/7f918871112e8e7c581e99eb8e545af4e59c8367
git.kernel.org/stable/c/92d0829eae... WEB
https://git.kernel.org/stable/c/92d0829eae257544b6b0faccb6e7079c45e22d48
git.kernel.org/stable/c/b6bf82bc5e... WEB
https://git.kernel.org/stable/c/b6bf82bc5e00afaf836f8bb9a676bffc182a6bbd

Frequently Asked Questions

What is CVE-2026-98400?
CVE-2026-98400 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-2026-98400?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98400?
CVE-2026-98400 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98400?
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-v8v9-cp6p-qm5r",
  "modified" : "2026-10-14T15:32:19Z",
  "published" : "2026-10-14T15:32:19Z",
  "aliases" : [ "CVE-2026-98400" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ipl: Fix NULL deref in kdump without re-IPL parm block\n\nSome IPL types, like HMC FTP boot or QEMU direct kernel boot, might\nnot provide an IPL parameter block. In this case, reipl_type_init()\nselects IPL_TYPE_UNKNOWN, and reipl_block_actual remains NULL.\n\nkdump passes the re-IPL parameter block to the dump kernel through\nos_info. Before commit 3b9678472bab (\"s390/ipl: correct kdump reipl\nblock checksum calculation\"), the os_info entry was added only for\nIPL types which initialized reipl_block_actual. That commit moved the\nos_info update to machine_crash_shutdown(), making it unconditional. As\na result, set_os_info_reipl_block() dereferences reipl_block_actual for\nIPL_TYPE_UNKNOWN. This may happen to work by chance when address zero\ncontains readable lowcore data and the resulting empty os_info entry is\nignored by the dump kernel.\n\nSkip the os_info update when no re-IPL parameter block is available.\nKdump then collect the dump and reboot without setting re-IPL parameter\nblock.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98400"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/030e88812435fc5d6aa42eee41fa77b5ea620327"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/50f9c40768e84f30d374235b3ee3850a94d9ac29"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7f918871112e8e7c581e99eb8e545af4e59c8367"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92d0829eae257544b6b0faccb6e7079c45e22d48"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b6bf82bc5e00afaf836f8bb9a676bffc182a6bbd"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-14T14:17:51Z"
  }
}