CVE-2026-89756: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-3m6w-wh62-j86p
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Advisory Summary

CVE-2026-89756 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-2026-89756 at a Glance

CVE Identifier CVE-2026-89756
GHSA Identifier GHSA-3m6w-wh62-j86p
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-2026-89756

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-2026-89756, 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: mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch() migrate_pages_batch() unmaps each folio before moving it, and every unmap runs the mmu_notifier invalidate callbacks. On KVM hosts try_to_migrate() ends up in kvm_mmu_notifier_invalidate_range_start() -> tdp_mmu_zap_leafs(), which is expensive, so unmapping a large batch keeps the CPU busy for a long time. The loop already calls cond_resched(), but on PREEMPTION kernels that is a no-op, and involuntary preemption is not a Tasks-RCU quiescent state. A long batch therefore never reports a quiescent state, and the migrating task (e.g. kcompactd) becomes a Tasks-RCU holdout, stalling the Tasks-RCU grace period for minutes, which is common at Meta fleet: INFO: rcu_tasks detected stalls on tasks: 0000000055349ecc: .. nvcsw: 1157401/1157401 holdout: 1 idle_cpu: -1/56 task:kcompactd0 state:R running task Call Trace: tdp_mmu_zap_leafs tdp_mmu_next_root gfn_to_pfn_cache_invalidate_start kvm_mmu_notifier_invalidate_range_start __mmu_notifier_invalidate_range_start try_to_migrate_one try_to_migrate migrate_pages_batch migrate_pages compact_zone compact_node kcompactd kthread Use cond_resched_tasks_rcu_qs() so a quiescent state is reported even when cond_resched() does nothing. This has also been discussed at [1]

References

NVD — CVE-2026-89756 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89756
git.kernel.org/stable/c/4757542649... WEB
https://git.kernel.org/stable/c/4757542649af56d894e25e30f57cd497dffad53f
git.kernel.org/stable/c/4996a7bc01... WEB
https://git.kernel.org/stable/c/4996a7bc01ef35570664854dac2530c604981039
git.kernel.org/stable/c/5dc0daff03... WEB
https://git.kernel.org/stable/c/5dc0daff0341c6baba19c38f47d299ac831d7e99
git.kernel.org/stable/c/66734981b4... WEB
https://git.kernel.org/stable/c/66734981b4d3c105223a13c827c9c73be18d91ad
git.kernel.org/stable/c/8c6d63d434... WEB
https://git.kernel.org/stable/c/8c6d63d434ebb85c6cf3dac1e70a171b183c6614
git.kernel.org/stable/c/efe8f86c09... WEB
https://git.kernel.org/stable/c/efe8f86c0916f0f74eea74ae21a3b37f728c6bad

Frequently Asked Questions

What is CVE-2026-89756?
CVE-2026-89756 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-2026-89756?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89756?
CVE-2026-89756 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89756?
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-3m6w-wh62-j86p",
  "modified" : "2026-09-14T15:32:36Z",
  "published" : "2026-09-11T21:31:39Z",
  "aliases" : [ "CVE-2026-89756" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/migrate: report RCU-tasks quiescent states in migrate_pages_batch()\n\nmigrate_pages_batch() unmaps each folio before moving it, and every\nunmap runs the mmu_notifier invalidate callbacks.  On KVM hosts\ntry_to_migrate() ends up in kvm_mmu_notifier_invalidate_range_start() ->\ntdp_mmu_zap_leafs(), which is expensive, so unmapping a large batch keeps\nthe CPU busy for a long time.\n\nThe loop already calls cond_resched(), but on PREEMPTION kernels that is\na no-op, and involuntary preemption is not a Tasks-RCU quiescent state.\n\nA long batch therefore never reports a quiescent state, and the\nmigrating task (e.g. kcompactd) becomes a Tasks-RCU holdout, stalling the\nTasks-RCU grace period for minutes, which is common at Meta fleet:\n\n  INFO: rcu_tasks detected stalls on tasks:\n  0000000055349ecc: .. nvcsw: 1157401/1157401 holdout: 1 idle_cpu: -1/56 task:kcompactd0      state:R  running task\n  Call Trace:\n   tdp_mmu_zap_leafs\n   tdp_mmu_next_root\n   gfn_to_pfn_cache_invalidate_start\n   kvm_mmu_notifier_invalidate_range_start\n   __mmu_notifier_invalidate_range_start\n   try_to_migrate_one\n   try_to_migrate\n   migrate_pages_batch\n   migrate_pages\n   compact_zone\n   compact_node\n   kcompactd\n   kthread\n\nUse cond_resched_tasks_rcu_qs() so a quiescent state is reported even\nwhen cond_resched() does nothing.\n\nThis has also been discussed at [1]",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89756"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4757542649af56d894e25e30f57cd497dffad53f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4996a7bc01ef35570664854dac2530c604981039"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5dc0daff0341c6baba19c38f47d299ac831d7e99"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/66734981b4d3c105223a13c827c9c73be18d91ad"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8c6d63d434ebb85c6cf3dac1e70a171b183c6614"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/efe8f86c0916f0f74eea74ae21a3b37f728c6bad"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:20:06Z"
  }
}