CVE-2026-98786: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-7r8j-xcf8-cxq6
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Advisory Summary

CVE-2026-98786 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-2026-98786 at a Glance

CVE Identifier CVE-2026-98786
GHSA Identifier GHSA-7r8j-xcf8-cxq6
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-2026-98786

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-2026-98786, 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/amd/display: guard dc_sink dereferences in MST mode validation dm_dp_mst_is_port_support_mode() reads aconnector->dc_sink->dsc_caps... for the DSC branch-throughput check, and get_conv_frl_bw()'s HDMI-PCON FRL-bandwidth path reads aconnector->dc_sink->edid_caps.max_frl_rate, both without a NULL check. dc_sink is cleared asynchronously on MST unplug, and both functions run from paths that the driver's own comments document as racing that teardown: the connector probe worker's ->mode_valid callback and a compositor's atomic check, neither of which holds the MST manager lock that the teardown path uses. The former does have an existing dsc_aux NULL check, but dsc_aux isn't reliably cleared in every path that clears dc_sink, so it doesn't cover this. Fail the port-support check and skip the FRL conversion path when the sink is already gone. (cherry picked from commit 7c3db8da4e039698ae198c870712428644e965c7)

References

NVD — CVE-2026-98786 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98786
git.kernel.org/stable/c/217f64f348... WEB
https://git.kernel.org/stable/c/217f64f348c90cba62164e7ff38e0ccf78a5ca09
git.kernel.org/stable/c/daa0437fe5... WEB
https://git.kernel.org/stable/c/daa0437fe5e451856aaf8fda602a9fc2105bbd54

Frequently Asked Questions

What is CVE-2026-98786?
CVE-2026-98786 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-2026-98786?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98786?
CVE-2026-98786 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98786?
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-7r8j-xcf8-cxq6",
  "modified" : "2026-10-18T18:32:03Z",
  "published" : "2026-10-18T18:32:03Z",
  "aliases" : [ "CVE-2026-98786" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: guard dc_sink dereferences in MST mode validation\n\ndm_dp_mst_is_port_support_mode() reads\naconnector->dc_sink->dsc_caps... for the DSC branch-throughput check,\nand get_conv_frl_bw()'s HDMI-PCON FRL-bandwidth path reads\naconnector->dc_sink->edid_caps.max_frl_rate, both without a NULL\ncheck. dc_sink is cleared asynchronously on MST unplug, and both\nfunctions run from paths that the driver's own comments document as\nracing that teardown: the connector probe worker's ->mode_valid\ncallback and a compositor's atomic check, neither of which holds the\nMST manager lock that the teardown path uses. The former does have an\nexisting dsc_aux NULL check, but dsc_aux isn't reliably cleared in\nevery path that clears dc_sink, so it doesn't cover this.\n\nFail the port-support check and skip the FRL conversion path when the\nsink is already gone.\n\n(cherry picked from commit 7c3db8da4e039698ae198c870712428644e965c7)",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98786"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/217f64f348c90cba62164e7ff38e0ccf78a5ca09"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/daa0437fe5e451856aaf8fda602a9fc2105bbd54"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:32Z"
  }
}