CVE-2026-98586: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4473-fgjm-w85x
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Advisory Summary

CVE-2026-98586 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-2026-98586 at a Glance

CVE Identifier CVE-2026-98586
GHSA Identifier GHSA-4473-fgjm-w85x
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-2026-98586

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-2026-98586, 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: sctp: hold asoc or transport before mod_timer() in timer handlers Take the association or transport reference before rearming a timer in the timer handlers. The existing code calls mod_timer() before taking the reference needed by the rearmed timer without holding the sock lock. This creates a race with timer cleanup: if the timer is deleted after mod_timer() returns but before the reference is taken, the cleanup path can drop the timer's reference and destroy the transport or association. The timer handler then takes a reference on the already freed object and eventually drops it, causing a refcount underflow. Hold the object before mod_timer() and drop the reference if mod_timer() reports that the timer was already pending in timer handlers. Apply the same ordering to the proto-unreachable path, which can rearm a transport timer outside the timer handlers without holding the sock lock.

References

NVD — CVE-2026-98586 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98586
git.kernel.org/stable/c/27c51a9b55... WEB
https://git.kernel.org/stable/c/27c51a9b55b227309161c903f9ecfbf022516bc2
git.kernel.org/stable/c/35bf3b23c9... WEB
https://git.kernel.org/stable/c/35bf3b23c9a871f44c1453d85f8332be4e088dda
git.kernel.org/stable/c/9d3d39da05... WEB
https://git.kernel.org/stable/c/9d3d39da054476e7aa05cd877b93ca73a9a77434
git.kernel.org/stable/c/cae23ae3f7... WEB
https://git.kernel.org/stable/c/cae23ae3f7887a1cf8a75da38edcebeef695040f
git.kernel.org/stable/c/d18cb8fd1b... WEB
https://git.kernel.org/stable/c/d18cb8fd1b6ba95c85de644203cfe1b071ff0c0f
git.kernel.org/stable/c/f7dea7eaea... WEB
https://git.kernel.org/stable/c/f7dea7eaea20fe9b80f8f77ba44d02b4a17f8050
git.kernel.org/stable/c/f9d929026d... WEB
https://git.kernel.org/stable/c/f9d929026d487a988bfa12c065f892e823e5b6ab

Frequently Asked Questions

What is CVE-2026-98586?
CVE-2026-98586 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-2026-98586?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98586?
CVE-2026-98586 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98586?
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-4473-fgjm-w85x",
  "modified" : "2026-10-18T18:31:55Z",
  "published" : "2026-10-18T18:31:55Z",
  "aliases" : [ "CVE-2026-98586" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: hold asoc or transport before mod_timer() in timer handlers\n\nTake the association or transport reference before rearming a timer in the\ntimer handlers.\n\nThe existing code calls mod_timer() before taking the reference needed by\nthe rearmed timer without holding the sock lock. This creates a race with\ntimer cleanup: if the timer is deleted after mod_timer() returns but before\nthe reference is taken, the cleanup path can drop the timer's reference and\ndestroy the transport or association. The timer handler then takes a\nreference on the already freed object and eventually drops it, causing a\nrefcount underflow.\n\nHold the object before mod_timer() and drop the reference if mod_timer()\nreports that the timer was already pending in timer handlers. Apply the\nsame ordering to the proto-unreachable path, which can rearm a transport\ntimer outside the timer handlers without holding the sock lock.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98586"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/27c51a9b55b227309161c903f9ecfbf022516bc2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/35bf3b23c9a871f44c1453d85f8332be4e088dda"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d3d39da054476e7aa05cd877b93ca73a9a77434"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cae23ae3f7887a1cf8a75da38edcebeef695040f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d18cb8fd1b6ba95c85de644203cfe1b071ff0c0f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f7dea7eaea20fe9b80f8f77ba44d02b4a17f8050"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f9d929026d487a988bfa12c065f892e823e5b6ab"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:11Z"
  }
}