CVE-2026-98253: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-6rqw-4vwj-ww2r
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CVSS 7.8
Published
Advisory Summary

CVE-2026-98253 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-98253 at a Glance

CVE Identifier CVE-2026-98253
GHSA Identifier GHSA-6rqw-4vwj-ww2r
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-98253

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-2026-98253, 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: RDMA/ucma: Serialize join and leave on copy_to_user failure rdma_join_multicast() queues RoCE work that later reads the ucma_multicast through event->param.ud.private_data, then list_add()s the CMA multicast at the head of id_priv->mc_list. rdma_leave_multicast() matches only by sockaddr and destroys the first hit. ucma_process_join() used to drop ctx->mutex after a successful join and retake it only if copy_to_user() failed. Two concurrent JOIN_MCAST calls with the same address can therefore insert a second CMA entry before the first thread's leave. leave then cancels the newer work and the older worker still dereferences the ucma_multicast that the first thread frees. Keep ctx->mutex held from rdma_join_multicast() through copy_to_user() and, on -EFAULT, through rdma_leave_multicast() so leave cannot miss this join. Do not leave if join itself failed: that path never published this address on mc_list, and a leave-by-addr would destroy an earlier successful join.

References

NVD — CVE-2026-98253 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98253
git.kernel.org/stable/c/01cbdb724c... WEB
https://git.kernel.org/stable/c/01cbdb724c584d7772fd25af2e4dfdf8527ce0d5
git.kernel.org/stable/c/01e29d0d78... WEB
https://git.kernel.org/stable/c/01e29d0d78a8f66f221625720a04939eef5ec1f6
git.kernel.org/stable/c/29b9ed83d8... WEB
https://git.kernel.org/stable/c/29b9ed83d8bfab5c6e11fcbf1aa836aa4ae26cb9
git.kernel.org/stable/c/43c4e24bd1... WEB
https://git.kernel.org/stable/c/43c4e24bd10370fc976f6220518049ce71419399
git.kernel.org/stable/c/52172e11bd... WEB
https://git.kernel.org/stable/c/52172e11bd074ccaded21740ffeb67123f01dd00
git.kernel.org/stable/c/662ade4de9... WEB
https://git.kernel.org/stable/c/662ade4de9ff5eceb0820a9f8e9fac70ba6a815b
git.kernel.org/stable/c/83610ee5e4... WEB
https://git.kernel.org/stable/c/83610ee5e498fa5bfcb80031d2b959baea276bf6
git.kernel.org/stable/c/ae805d204c... WEB
https://git.kernel.org/stable/c/ae805d204cf1f15b87d1bf3529b4c649f3519420

Frequently Asked Questions

What is CVE-2026-98253?
CVE-2026-98253 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-2026-98253?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-98253?
CVE-2026-98253 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-98253?
CVE-2026-98253 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98253?
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-6rqw-4vwj-ww2r",
  "modified" : "2026-10-07T09:32:14Z",
  "published" : "2026-10-06T09:31:32Z",
  "aliases" : [ "CVE-2026-98253" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ucma: Serialize join and leave on copy_to_user failure\n\nrdma_join_multicast() queues RoCE work that later reads the ucma_multicast\nthrough event->param.ud.private_data, then list_add()s the CMA multicast\nat the head of id_priv->mc_list. rdma_leave_multicast() matches only by\nsockaddr and destroys the first hit.\n\nucma_process_join() used to drop ctx->mutex after a successful join and\nretake it only if copy_to_user() failed. Two concurrent JOIN_MCAST calls\nwith the same address can therefore insert a second CMA entry before the\nfirst thread's leave. leave then cancels the newer work and the older\nworker still dereferences the ucma_multicast that the first thread frees.\n\nKeep ctx->mutex held from rdma_join_multicast() through copy_to_user() and,\non -EFAULT, through rdma_leave_multicast() so leave cannot miss this join.\nDo not leave if join itself failed: that path never published this address\non mc_list, and a leave-by-addr would destroy an earlier successful join.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98253"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/01cbdb724c584d7772fd25af2e4dfdf8527ce0d5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/01e29d0d78a8f66f221625720a04939eef5ec1f6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/29b9ed83d8bfab5c6e11fcbf1aa836aa4ae26cb9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/43c4e24bd10370fc976f6220518049ce71419399"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/52172e11bd074ccaded21740ffeb67123f01dd00"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/662ade4de9ff5eceb0820a9f8e9fac70ba6a815b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/83610ee5e498fa5bfcb80031d2b959baea276bf6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ae805d204cf1f15b87d1bf3529b4c649f3519420"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-06T09:18:13Z"
  }
}