CVE-2026-98623: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5c9q-m24x-7r34
Share
Published
Advisory Summary

CVE-2026-98623 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-2026-98623 at a Glance

CVE Identifier CVE-2026-98623
GHSA Identifier GHSA-5c9q-m24x-7r34
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-2026-98623

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-2026-98623, 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: drm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update If list_for_each_entry() exits without hitting a break then "pstate" is not a valid pstate pointer. Introduce a "found" variable instead. The check is reachable from userspace: nvkm_clk_ustate_update() takes the pstate id straight from the 'pstate' debugfs file, so requesting an id that is not in clk->states - or any id at all when the perf tables are broken and the list is empty - makes the pstate->pstate != req test dereference the list head cast to a struct nvkm_pstate, which is an out-of-bounds read. [Francesco: rebased on drm-misc-next, expanded the commit message]

References

NVD — CVE-2026-98623 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98623
git.kernel.org/stable/c/0d096a7f7d... WEB
https://git.kernel.org/stable/c/0d096a7f7d79207490858dde731b16da5337e90c
git.kernel.org/stable/c/391517da7f... WEB
https://git.kernel.org/stable/c/391517da7fd54ae40e4a7fe1cc696217343b0061
git.kernel.org/stable/c/492e9cfa12... WEB
https://git.kernel.org/stable/c/492e9cfa12f35f7946ea1b78a19f1f9337d62248
git.kernel.org/stable/c/5315c7bacf... WEB
https://git.kernel.org/stable/c/5315c7bacfe274ddfe649d9556e9a341ffa812da
git.kernel.org/stable/c/9d55092496... WEB
https://git.kernel.org/stable/c/9d550924961f61a491dd95359c63494fa8a23d9f
git.kernel.org/stable/c/a867abcfa8... WEB
https://git.kernel.org/stable/c/a867abcfa85ab487066c3d3008a1ba905da04113
git.kernel.org/stable/c/aff09d9e37... WEB
https://git.kernel.org/stable/c/aff09d9e37e02dc60bde79035ac15b136d602259
git.kernel.org/stable/c/db5dd9f47b... WEB
https://git.kernel.org/stable/c/db5dd9f47b4df1be322f498d846e9a82940a7390

Frequently Asked Questions

What is CVE-2026-98623?
CVE-2026-98623 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-2026-98623?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98623?
CVE-2026-98623 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98623?
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-5c9q-m24x-7r34",
  "modified" : "2026-10-18T18:31:57Z",
  "published" : "2026-10-18T18:31:56Z",
  "aliases" : [ "CVE-2026-98623" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update\n\nIf list_for_each_entry() exits without hitting a break then \"pstate\" is\nnot a valid pstate pointer.  Introduce a \"found\" variable instead.\n\nThe check is reachable from userspace: nvkm_clk_ustate_update() takes the\npstate id straight from the 'pstate' debugfs file, so requesting an id\nthat is not in clk->states - or any id at all when the perf tables are\nbroken and the list is empty - makes the pstate->pstate != req test\ndereference the list head cast to a struct nvkm_pstate, which is an\nout-of-bounds read.\n\n[Francesco: rebased on drm-misc-next, expanded the commit message]",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98623"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0d096a7f7d79207490858dde731b16da5337e90c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/391517da7fd54ae40e4a7fe1cc696217343b0061"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/492e9cfa12f35f7946ea1b78a19f1f9337d62248"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5315c7bacfe274ddfe649d9556e9a341ffa812da"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d550924961f61a491dd95359c63494fa8a23d9f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a867abcfa85ab487066c3d3008a1ba905da04113"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aff09d9e37e02dc60bde79035ac15b136d602259"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/db5dd9f47b4df1be322f498d846e9a82940a7390"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:15Z"
  }
}