CVE-2026-89559: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cp82-3r67-94rf
Share
CVSS 7.8
Published
Advisory Summary

CVE-2026-89559 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89559 at a Glance

CVE Identifier CVE-2026-89559
GHSA Identifier GHSA-cp82-3r67-94rf
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-89559

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-2026-89559, 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: libnvdimm/labels: Prevent integer overflow in __nd_label_validate() The on-media namespace index field nslot is a u32 read from the DIMM label storage area. __nd_label_validate() bounds it against the config area size, but sizeof_namespace_label() returns unsigned, so the product nslot * label_size is evaluated in 32-bit and wraps modulo 2^32 before the comparison. A crafted nslot passes the bound and is then used as the loop trip count in nd_label_data_init(), whose memset() walks off the end of the config_size buffer: an out-of-bounds write. The field is not trusted -- it comes from the medium, or from userspace via ND_CMD_SET_CONFIG_DATA. Evaluate the product in 64-bit so the bound check is exact; conforming labels are unaffected. The check was safe when introduced by commit 4a826c83db4e ("libnvdimm: namespace indices: read and validate"): it multiplied by sizeof(struct nd_namespace_label), a size_t, so on a 64-bit build the product did not wrap. Commit 564e871aa66f ("libnvdimm, label: add v1.2 nvdimm label definitions") narrowed it to 32 bits when the label size became a runtime value read via sizeof_namespace_label().

References

NVD — CVE-2026-89559 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89559
git.kernel.org/stable/c/0377706861... WEB
https://git.kernel.org/stable/c/037770686126155eafc44501312989e2837b9659
git.kernel.org/stable/c/09e649117c... WEB
https://git.kernel.org/stable/c/09e649117c54b7e1c004f22eaa19efbadd9ac856
git.kernel.org/stable/c/1c391696d2... WEB
https://git.kernel.org/stable/c/1c391696d2791f82ae462e11da9a0d96f90b240c
git.kernel.org/stable/c/6030597ec6... WEB
https://git.kernel.org/stable/c/6030597ec683d1e5b46445f888bb5c7776b5a0c4
git.kernel.org/stable/c/69a7343596... WEB
https://git.kernel.org/stable/c/69a734359639fca16a0dd73ab17a34943e76c68b
git.kernel.org/stable/c/93967bfb17... WEB
https://git.kernel.org/stable/c/93967bfb17dab66642c57e609c99e1a91fe11278
git.kernel.org/stable/c/b4975f2ff6... WEB
https://git.kernel.org/stable/c/b4975f2ff6c82adc24ae547f029f82530ba43cfe
git.kernel.org/stable/c/e057efcc9c... WEB
https://git.kernel.org/stable/c/e057efcc9c71d90099d9ee00bed0748d0e9fd586

Frequently Asked Questions

What is CVE-2026-89559?
CVE-2026-89559 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-2026-89559?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89559?
CVE-2026-89559 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89559?
CVE-2026-89559 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89559?
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-cp82-3r67-94rf",
  "modified" : "2026-09-14T15:32:29Z",
  "published" : "2026-09-11T21:31:32Z",
  "aliases" : [ "CVE-2026-89559" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlibnvdimm/labels: Prevent integer overflow in __nd_label_validate()\n\nThe on-media namespace index field nslot is a u32 read from the DIMM\nlabel storage area.  __nd_label_validate() bounds it against the config\narea size, but sizeof_namespace_label() returns unsigned, so the product\nnslot * label_size is evaluated in 32-bit and wraps modulo 2^32 before\nthe comparison.  A crafted nslot passes the bound and is then used as the\nloop trip count in nd_label_data_init(), whose memset() walks off the end\nof the config_size buffer: an out-of-bounds write.\n\nThe field is not trusted -- it comes from the medium, or from userspace\nvia ND_CMD_SET_CONFIG_DATA.  Evaluate the product in 64-bit so the bound\ncheck is exact; conforming labels are unaffected.\n\nThe check was safe when introduced by commit 4a826c83db4e (\"libnvdimm:\nnamespace indices: read and validate\"): it multiplied by sizeof(struct\nnd_namespace_label), a size_t, so on a 64-bit build the product did not\nwrap.  Commit 564e871aa66f (\"libnvdimm, label: add v1.2 nvdimm label\ndefinitions\") narrowed it to 32 bits when the label size became a runtime\nvalue read via sizeof_namespace_label().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89559"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/037770686126155eafc44501312989e2837b9659"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/09e649117c54b7e1c004f22eaa19efbadd9ac856"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1c391696d2791f82ae462e11da9a0d96f90b240c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6030597ec683d1e5b46445f888bb5c7776b5a0c4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/69a734359639fca16a0dd73ab17a34943e76c68b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/93967bfb17dab66642c57e609c99e1a91fe11278"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b4975f2ff6c82adc24ae547f029f82530ba43cfe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e057efcc9c71d90099d9ee00bed0748d0e9fd586"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:39Z"
  }
}