CVE-2026-89926: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2m53-w88c-rh92
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Advisory Summary

CVE-2026-89926 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-2026-89926 at a Glance

CVE Identifier CVE-2026-89926
GHSA Identifier GHSA-2m53-w88c-rh92
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-2026-89926

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-2026-89926, 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: s390: Fix length check __import_wp_info() struct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user space. This is then assigned to wp_info->len, which is an int. The bounds check is done on the truncated value while the allocation uses the untruncated one: wp_info->len = bp_data->len; [...] if (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE) return -EINVAL; wp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT); Use the validated value for the allocation as intended. Without this fix userspace can trigger >4GB allocations which will fail and result in a WARN due to MAX_PAGE_ORDER.

References

NVD — CVE-2026-89926 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89926
git.kernel.org/stable/c/3fe801db90... WEB
https://git.kernel.org/stable/c/3fe801db90bdeefb0bbdda42d832846b53f64f8a
git.kernel.org/stable/c/4c07680a46... WEB
https://git.kernel.org/stable/c/4c07680a467e2f7697245bcd11691bffb2a6f0ed
git.kernel.org/stable/c/71153d3262... WEB
https://git.kernel.org/stable/c/71153d3262517e1c02c3a66aa5094f279b2d1454
git.kernel.org/stable/c/aef540194e... WEB
https://git.kernel.org/stable/c/aef540194effd768bed0bd2e6a74fe135a3d7c3a
git.kernel.org/stable/c/b94ab9caa5... WEB
https://git.kernel.org/stable/c/b94ab9caa5d72c78226121cccff5e33f946da900
git.kernel.org/stable/c/beb9c55af6... WEB
https://git.kernel.org/stable/c/beb9c55af609c4c7308259d7191688c75a4e3d4a
git.kernel.org/stable/c/fec89d327d... WEB
https://git.kernel.org/stable/c/fec89d327d9b2b669b5bbdac209386c6317c3722

Frequently Asked Questions

What is CVE-2026-89926?
CVE-2026-89926 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-2026-89926?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89926?
CVE-2026-89926 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89926?
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-2m53-w88c-rh92",
  "modified" : "2026-09-16T12:30:41Z",
  "published" : "2026-09-16T12:30:41Z",
  "aliases" : [ "CVE-2026-89926" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix length check __import_wp_info()\n\nstruct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user\nspace. This is then assigned to wp_info->len, which is an int. The bounds\ncheck is done on the truncated value while the allocation uses the\nuntruncated one:\n\n\twp_info->len = bp_data->len;\n\t[...]\n\tif (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE)\n\t\treturn -EINVAL;\n\n\twp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT);\n\nUse the validated value for the allocation as intended. Without this\nfix userspace can trigger >4GB allocations which will fail and result\nin a WARN due to MAX_PAGE_ORDER.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89926"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3fe801db90bdeefb0bbdda42d832846b53f64f8a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4c07680a467e2f7697245bcd11691bffb2a6f0ed"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/71153d3262517e1c02c3a66aa5094f279b2d1454"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aef540194effd768bed0bd2e6a74fe135a3d7c3a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b94ab9caa5d72c78226121cccff5e33f946da900"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/beb9c55af609c4c7308259d7191688c75a4e3d4a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fec89d327d9b2b669b5bbdac209386c6317c3722"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:17:01Z"
  }
}