CVE-2026-98537: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-6w2x-9phq-jcjc
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Advisory Summary

CVE-2026-98537 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-2026-98537 at a Glance

CVE Identifier CVE-2026-98537
GHSA Identifier GHSA-6w2x-9phq-jcjc
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-2026-98537

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-2026-98537, 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: workqueue: Fix NULL current_pwq deref in flush dependency check check_flush_dependency() uses current_wq_worker() to determine whether the caller is a workqueue worker and then dereferences worker->current_pwq to test whether the current workqueue is WQ_MEM_RECLAIM. current_wq_worker() only means that %current has PF_WQ_WORKER set. A kworker can reach check_flush_dependency() while it is not executing a work item. One such path is worker_thread() acting as the pool manager, where create_worker() does GFP_KERNEL allocation and the allocation path invokes the OOM notifier. In that state worker->current_pwq is NULL because current_pwq is set only by process_one_work() and cleared again after the work function returns. [ 416.760634][ T375] Call trace: [ 416.760638][ T375] check_flush_dependency+0x80/0x120 (P) [ 416.760648][ T375] __flush_work+0x98/0x224 [ 416.760657][ T375] flush_work+0x30/0x44 [ 416.760665][ T375] ... [ 416.760710][ T375] blocking_notifier_call_chain+0x58/0xa0 [ 416.760719][ T375] out_of_memory+0xb4/0x458 [ 416.760730][ T375] __alloc_pages_may_oom+0x11c/0x1a8 [ 416.760739][ T375] __alloc_pages_slowpath+0x314/0x46c [ 416.760746][ T375] __alloc_frozen_pages_noprof+0x110/0x1a4 [ 416.760753][ T375] new_slab+0x12c/0x484 [ 416.760759][ T375] ___slab_alloc+0x7a8/0xc7c [ 416.760765][ T375] __slab_alloc+0x74/0xd8 [ 416.760772][ T375] __kmalloc_cache_node_noprof+0x2ac/0x304 [ 416.760779][ T375] alloc_worker+0x28/0x60 [ 416.760785][ T375] create_worker+0x4c/0x20c [ 416.760790][ T375] worker_thread+0xe8/0x2b8 [ 416.760796][ T375] kthread+0x1a8/0x200 [ 416.760805][ T375] ret_from_fork+0x10/0x20 Guard the WQ_MEM_RECLAIM-worker warning with worker->current_pwq. If the kworker is not currently executing a work item, there is no current workqueue to diagnose with that warning. The PF_MEMALLOC warning is left unchanged so explicit reclaim context flushing a !WQ_MEM_RECLAIM target is still reported.

References

NVD — CVE-2026-98537 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98537
git.kernel.org/stable/c/0c6b9b1e29... WEB
https://git.kernel.org/stable/c/0c6b9b1e295aeff1132ac7aa738148cc65f06485
git.kernel.org/stable/c/1dccf5dc2f... WEB
https://git.kernel.org/stable/c/1dccf5dc2f8fe688270b261ca4216e03c6a1e674
git.kernel.org/stable/c/513121e693... WEB
https://git.kernel.org/stable/c/513121e69388604619ea8c0ee07e86a3d1b5b5dc
git.kernel.org/stable/c/8ffececcb8... WEB
https://git.kernel.org/stable/c/8ffececcb88262389b4f91fed0fe4884b68204bc
git.kernel.org/stable/c/9bb739a5c5... WEB
https://git.kernel.org/stable/c/9bb739a5c5a570c28a62afb98e9326e2a49743c1
git.kernel.org/stable/c/cc190a6a1d... WEB
https://git.kernel.org/stable/c/cc190a6a1d20b87e6a9435202fc2a3bd84c79fb3
git.kernel.org/stable/c/db6365ced4... WEB
https://git.kernel.org/stable/c/db6365ced4d5855e321f772b240c0e473bcfcdd5
git.kernel.org/stable/c/f97e6d0572... WEB
https://git.kernel.org/stable/c/f97e6d0572d1b39998e053732332bc3cfdd0b9aa

Frequently Asked Questions

What is CVE-2026-98537?
CVE-2026-98537 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-2026-98537?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98537?
CVE-2026-98537 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98537?
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-6w2x-9phq-jcjc",
  "modified" : "2026-10-18T18:31:53Z",
  "published" : "2026-10-18T18:31:53Z",
  "aliases" : [ "CVE-2026-98537" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: Fix NULL current_pwq deref in flush dependency check\n\ncheck_flush_dependency() uses current_wq_worker() to determine whether\nthe caller is a workqueue worker and then dereferences worker->current_pwq\nto test whether the current workqueue is WQ_MEM_RECLAIM.\n\ncurrent_wq_worker() only means that %current has PF_WQ_WORKER set. A\nkworker can reach check_flush_dependency() while it is not executing a\nwork item. One such path is worker_thread() acting as the pool manager,\nwhere create_worker() does GFP_KERNEL allocation and the allocation path\ninvokes the OOM notifier. In that state worker->current_pwq is NULL\nbecause current_pwq is set only by process_one_work() and cleared again\nafter the work function returns.\n\n[  416.760634][  T375] Call trace:\n[  416.760638][  T375]  check_flush_dependency+0x80/0x120 (P)\n[  416.760648][  T375]  __flush_work+0x98/0x224\n[  416.760657][  T375]  flush_work+0x30/0x44\n[  416.760665][  T375]  ...\n[  416.760710][  T375]  blocking_notifier_call_chain+0x58/0xa0\n[  416.760719][  T375]  out_of_memory+0xb4/0x458\n[  416.760730][  T375]  __alloc_pages_may_oom+0x11c/0x1a8\n[  416.760739][  T375]  __alloc_pages_slowpath+0x314/0x46c\n[  416.760746][  T375]  __alloc_frozen_pages_noprof+0x110/0x1a4\n[  416.760753][  T375]  new_slab+0x12c/0x484\n[  416.760759][  T375]  ___slab_alloc+0x7a8/0xc7c\n[  416.760765][  T375]  __slab_alloc+0x74/0xd8\n[  416.760772][  T375]  __kmalloc_cache_node_noprof+0x2ac/0x304\n[  416.760779][  T375]  alloc_worker+0x28/0x60\n[  416.760785][  T375]  create_worker+0x4c/0x20c\n[  416.760790][  T375]  worker_thread+0xe8/0x2b8\n[  416.760796][  T375]  kthread+0x1a8/0x200\n[  416.760805][  T375]  ret_from_fork+0x10/0x20\n\nGuard the WQ_MEM_RECLAIM-worker warning with worker->current_pwq. If the\nkworker is not currently executing a work item, there is no current\nworkqueue to diagnose with that warning. The PF_MEMALLOC warning is left\nunchanged so explicit reclaim context flushing a !WQ_MEM_RECLAIM target\nis still reported.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98537"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0c6b9b1e295aeff1132ac7aa738148cc65f06485"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1dccf5dc2f8fe688270b261ca4216e03c6a1e674"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/513121e69388604619ea8c0ee07e86a3d1b5b5dc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8ffececcb88262389b4f91fed0fe4884b68204bc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9bb739a5c5a570c28a62afb98e9326e2a49743c1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cc190a6a1d20b87e6a9435202fc2a3bd84c79fb3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/db6365ced4d5855e321f772b240c0e473bcfcdd5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f97e6d0572d1b39998e053732332bc3cfdd0b9aa"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:05Z"
  }
}