CVE-2026-89485: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-wccq-x362-cg9j
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CVSS 9.8
Published
Advisory Summary

CVE-2026-89485 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89485 at a Glance

CVE Identifier CVE-2026-89485
GHSA Identifier GHSA-wccq-x362-cg9j
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-89485

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-2026-89485, 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: lockd: pin next file across nlm_inspect_file lock-drop nlm_traverse_files() pins the current file with f_count++ across a mutex_unlock for nlm_inspect_file(), but nothing pins the saved next pointer. A concurrent nlm_release_file() can kfree the next file during the unlock window, and the iterator dereferences freed memory on the next loop step. Pin both current and next before the lock-drop. Advance by swapping the pinned cursors at the end of each iteration so next is always held alive across the unlock. Always call nlm_file_release() after dropping the iteration pin, regardless of whether the file matched the predicate. Use nlm_file_inuse(), which does a live walk of the inode lock list, rather than the cached f_locks field, so skipped files that never ran nlm_inspect_file() are evaluated correctly. Because every file in a hash bucket is now pinned and released, files skipped by the is_failover_file predicate that have no locks, blocks, shares, or external references are deleted during traversal. The old code never evaluated skipped files for cleanup. The new behavior is intentional: such files are stale and should not persist in the table.

References

NVD — CVE-2026-89485 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89485
git.kernel.org/stable/c/08a455f87b... WEB
https://git.kernel.org/stable/c/08a455f87b14c7ff22ae3fdadda62a796a3a5572
git.kernel.org/stable/c/350087f231... WEB
https://git.kernel.org/stable/c/350087f231c11efcd288c310707c40eab63ca583
git.kernel.org/stable/c/41f0a6d316... WEB
https://git.kernel.org/stable/c/41f0a6d31615fcae261bf28a0aa50050dc93a401
git.kernel.org/stable/c/526c49cff3... WEB
https://git.kernel.org/stable/c/526c49cff3f72c3ec74752016380c7567040581b
git.kernel.org/stable/c/550c19222c... WEB
https://git.kernel.org/stable/c/550c19222c7132c888e23c9d89079ba1c9bc4cca
git.kernel.org/stable/c/c24bdb7df2... WEB
https://git.kernel.org/stable/c/c24bdb7df2f34bdc38ca8a73796f5acb40f1830c
git.kernel.org/stable/c/e3c413f789... WEB
https://git.kernel.org/stable/c/e3c413f789eaf0170275c7eba523ead73d963f30
git.kernel.org/stable/c/e999a88133... WEB
https://git.kernel.org/stable/c/e999a88133654c6dfc68487fb49da5f20dfa2d4f

Frequently Asked Questions

What is CVE-2026-89485?
CVE-2026-89485 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-2026-89485?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89485?
CVE-2026-89485 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89485?
CVE-2026-89485 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89485?
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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-wccq-x362-cg9j",
  "modified" : "2026-09-14T15:32:26Z",
  "published" : "2026-09-11T21:31:28Z",
  "aliases" : [ "CVE-2026-89485" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlockd: pin next file across nlm_inspect_file lock-drop\n\nnlm_traverse_files() pins the current file with f_count++ across\na mutex_unlock for nlm_inspect_file(), but nothing pins the saved\nnext pointer.  A concurrent nlm_release_file() can kfree the next\nfile during the unlock window, and the iterator dereferences freed\nmemory on the next loop step.\n\nPin both current and next before the lock-drop.  Advance by\nswapping the pinned cursors at the end of each iteration so next\nis always held alive across the unlock.\n\nAlways call nlm_file_release() after dropping the iteration pin,\nregardless of whether the file matched the predicate.  Use\nnlm_file_inuse(), which does a live walk of the inode lock list,\nrather than the cached f_locks field, so skipped files that never\nran nlm_inspect_file() are evaluated correctly.\n\nBecause every file in a hash bucket is now pinned and released,\nfiles skipped by the is_failover_file predicate that have no\nlocks, blocks, shares, or external references are deleted during\ntraversal.  The old code never evaluated skipped files for\ncleanup.  The new behavior is intentional: such files are stale\nand should not persist in the table.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89485"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/08a455f87b14c7ff22ae3fdadda62a796a3a5572"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/350087f231c11efcd288c310707c40eab63ca583"
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    "type" : "WEB",
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/550c19222c7132c888e23c9d89079ba1c9bc4cca"
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    "url" : "https://git.kernel.org/stable/c/c24bdb7df2f34bdc38ca8a73796f5acb40f1830c"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e3c413f789eaf0170275c7eba523ead73d963f30"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e999a88133654c6dfc68487fb49da5f20dfa2d4f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:30Z"
  }
}