CVE-2026-89721: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-jrrm-mv6f-g3m6
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Advisory Summary

CVE-2026-89721 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-2026-89721 at a Glance

CVE Identifier CVE-2026-89721
GHSA Identifier GHSA-jrrm-mv6f-g3m6
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-2026-89721

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-2026-89721, 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: phy: rockchip-samsung-dcphy: fix out-of-range max_register The PHY register block is 64KB, so with a register stride of 4 the last accessible register sits at offset 0xfffc. max_register names 0x10000, one register past the end of the mapping: dumping the registers through the regmap debugfs interface reads beyond the ioremapped region and oopses on the unmapped page. The oops fires with the regmap lock held, so later PHY operations deadlock.

References

NVD — CVE-2026-89721 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89721
git.kernel.org/stable/c/14afe18655... WEB
https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd
git.kernel.org/stable/c/4486e75ba6... WEB
https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b
git.kernel.org/stable/c/c1a62f9dcf... WEB
https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f

Frequently Asked Questions

What is CVE-2026-89721?
CVE-2026-89721 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-2026-89721?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89721?
CVE-2026-89721 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89721?
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-jrrm-mv6f-g3m6",
  "modified" : "2026-09-11T21:31:37Z",
  "published" : "2026-09-11T21:31:37Z",
  "aliases" : [ "CVE-2026-89721" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89721"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:20:01Z"
  }
}