CVE-2026-89642: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-cjwf-376p-qpm9
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Advisory Summary

CVE-2026-89642 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-2026-89642 at a Glance

CVE Identifier CVE-2026-89642
GHSA Identifier GHSA-cjwf-376p-qpm9
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-2026-89642

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-2026-89642, 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: cifs: call pagecache_isize_extended() in cifs_setsize() when extending cifs_setsize() calls truncate_pagecache() but skips pagecache_isize_extended() on extension. truncate_setsize() shows the correct pattern: i_size_write(inode, newsize); if (newsize > oldsize) pagecache_isize_extended(inode, oldsize, newsize); truncate_pagecache(inode, newsize); pagecache_isize_extended() zeroes the tail of the page straddling old EOF. Without it, dirty bytes in that region can be written back to the server, exposing stale data in the newly extended range.

References

NVD — CVE-2026-89642 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89642
git.kernel.org/stable/c/12bafe32f0... WEB
https://git.kernel.org/stable/c/12bafe32f09c0d24f5096154b59c347b9c6606e0
git.kernel.org/stable/c/c510edb973... WEB
https://git.kernel.org/stable/c/c510edb9734af1c274d18f4f31a471a166bbc7e8
git.kernel.org/stable/c/e1f692b6da... WEB
https://git.kernel.org/stable/c/e1f692b6da3e632a25d0b3a99f833bb609bae1a3

Frequently Asked Questions

What is CVE-2026-89642?
CVE-2026-89642 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-2026-89642?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89642?
CVE-2026-89642 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89642?
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-cjwf-376p-qpm9",
  "modified" : "2026-10-15T12:30:46Z",
  "published" : "2026-09-11T21:31:34Z",
  "aliases" : [ "CVE-2026-89642" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: call pagecache_isize_extended() in cifs_setsize() when extending\n\ncifs_setsize() calls truncate_pagecache() but skips\npagecache_isize_extended() on extension.  truncate_setsize() shows\nthe correct pattern:\n\n  i_size_write(inode, newsize);\n  if (newsize > oldsize)\n      pagecache_isize_extended(inode, oldsize, newsize);\n  truncate_pagecache(inode, newsize);\n\npagecache_isize_extended() zeroes the tail of the page straddling old\nEOF.  Without it, dirty bytes in that region can be written back to\nthe server, exposing stale data in the newly extended range.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89642"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/12bafe32f09c0d24f5096154b59c347b9c6606e0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c510edb9734af1c274d18f4f31a471a166bbc7e8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e1f692b6da3e632a25d0b3a99f833bb609bae1a3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:49Z"
  }
}