CVE-2026-89830: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-c5cf-c6gm-hv9c
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Advisory Summary

CVE-2026-89830 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-2026-89830 at a Glance

CVE Identifier CVE-2026-89830
GHSA Identifier GHSA-c5cf-c6gm-hv9c
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-2026-89830

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-2026-89830, 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: f2fs: fix valid block count leak on data block allocation failure In __allocate_data_block(), when allocating a new data block (dn->data_blkaddr == NULL_ADDR), inc_valid_block_count() is called first to increment total_valid_block_count and i_blocks. If the subsequent f2fs_allocate_data_block() fails, the function returns the error directly without rolling back the already-incremented block counts, causing a permanent leak. Fix this by calling dec_valid_block_count() to undo the increment before returning the error. The condition old_blkaddr == NULL_ADDR precisely identifies the case where inc_valid_block_count() was called.

References

NVD — CVE-2026-89830 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89830
git.kernel.org/stable/c/0f9af07ecc... WEB
https://git.kernel.org/stable/c/0f9af07ecc1ab486038373db6ae0436c5d674b19
git.kernel.org/stable/c/2d50b6d47e... WEB
https://git.kernel.org/stable/c/2d50b6d47e5671ff6a25834c5906d443356191f0
git.kernel.org/stable/c/931e1aa4d4... WEB
https://git.kernel.org/stable/c/931e1aa4d44c52ff8e0feb38420a8827c62e886b
git.kernel.org/stable/c/dde99df5a9... WEB
https://git.kernel.org/stable/c/dde99df5a9d3b0ca6ac0a86f98799685f7399432

Frequently Asked Questions

What is CVE-2026-89830?
CVE-2026-89830 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-2026-89830?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89830?
CVE-2026-89830 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89830?
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-c5cf-c6gm-hv9c",
  "modified" : "2026-09-16T12:30:38Z",
  "published" : "2026-09-16T12:30:38Z",
  "aliases" : [ "CVE-2026-89830" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix valid block count leak on data block allocation failure\n\nIn __allocate_data_block(), when allocating a new data block\n(dn->data_blkaddr == NULL_ADDR), inc_valid_block_count() is\ncalled first to increment total_valid_block_count and i_blocks.\nIf the subsequent f2fs_allocate_data_block() fails, the function\nreturns the error directly without rolling back the\nalready-incremented block counts, causing a permanent leak.\n\nFix this by calling dec_valid_block_count() to undo the\nincrement before returning the error. The condition\nold_blkaddr == NULL_ADDR precisely identifies the case where\ninc_valid_block_count() was called.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89830"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0f9af07ecc1ab486038373db6ae0436c5d674b19"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2d50b6d47e5671ff6a25834c5906d443356191f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/931e1aa4d44c52ff8e0feb38420a8827c62e886b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dde99df5a9d3b0ca6ac0a86f98799685f7399432"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:49Z"
  }
}