CVE-2026-89566: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-p6jx-2fv3-6j26
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Advisory Summary

CVE-2026-89566 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-2026-89566 at a Glance

CVE Identifier CVE-2026-89566
GHSA Identifier GHSA-p6jx-2fv3-6j26
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-2026-89566

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-2026-89566, 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: jbd2: check need_resched() when skipping busy checkpoint buffers journal_shrink_one_cp_list() skips busy checkpoint buffers when called with JBD2_SHRINK_BUSY_SKIP. The continue statement on this path also skips the need_resched() check at the end of the loop body. Consequently, when a checkpoint list contains mostly busy buffers, the shrinker can walk the entire list while holding journal->j_list_lock, even when a reschedule has been requested. Large checkpoint lists under memory pressure can therefore cause long lock hold times and leave other CPUs spinning on j_list_lock, resulting in soft lockups or RCU stalls. Route the busy-buffer path through the need_resched() check so that the shrinker can release j_list_lock and reschedule promptly, restoring parity with the clean-buffer path, which already checks need_resched(). This does not change which checkpoint buffers are eligible for removal.

References

NVD — CVE-2026-89566 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89566
git.kernel.org/stable/c/595cac7f1b... WEB
https://git.kernel.org/stable/c/595cac7f1b32d009b97f83dd2b2d6a1a445e9bb4
git.kernel.org/stable/c/f213e12ff5... WEB
https://git.kernel.org/stable/c/f213e12ff5c9590b1034ae8da0e6d09665c772d0
git.kernel.org/stable/c/f83c23286e... WEB
https://git.kernel.org/stable/c/f83c23286e54180cdc83a36463a60003534cc290
git.kernel.org/stable/c/f9182a8599... WEB
https://git.kernel.org/stable/c/f9182a85991a0ad5cd2940df6db75f40ad90028c

Frequently Asked Questions

What is CVE-2026-89566?
CVE-2026-89566 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-2026-89566?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89566?
CVE-2026-89566 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89566?
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-p6jx-2fv3-6j26",
  "modified" : "2026-09-11T21:31:32Z",
  "published" : "2026-09-11T21:31:32Z",
  "aliases" : [ "CVE-2026-89566" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: check need_resched() when skipping busy checkpoint buffers\n\njournal_shrink_one_cp_list() skips busy checkpoint buffers when called\nwith JBD2_SHRINK_BUSY_SKIP.  The continue statement on this path also\nskips the need_resched() check at the end of the loop body.\n\nConsequently, when a checkpoint list contains mostly busy buffers, the\nshrinker can walk the entire list while holding journal->j_list_lock,\neven when a reschedule has been requested.  Large checkpoint lists under\nmemory pressure can therefore cause long lock hold times and leave other\nCPUs spinning on j_list_lock, resulting in soft lockups or RCU stalls.\n\nRoute the busy-buffer path through the need_resched() check so that the\nshrinker can release j_list_lock and reschedule promptly, restoring\nparity with the clean-buffer path, which already checks need_resched().\nThis does not change which checkpoint buffers are eligible for removal.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89566"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/595cac7f1b32d009b97f83dd2b2d6a1a445e9bb4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f213e12ff5c9590b1034ae8da0e6d09665c772d0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f83c23286e54180cdc83a36463a60003534cc290"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f9182a85991a0ad5cd2940df6db75f40ad90028c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:40Z"
  }
}