CVE-2026-98108: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-q3c9-52vx-cgp8
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CVSS 7.5
Published
Advisory Summary

CVE-2026-98108 is a HIGH (CVSS 7.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-98108 at a Glance

CVE Identifier CVE-2026-98108
GHSA Identifier GHSA-q3c9-52vx-cgp8
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Adjacent (AV:A)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
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-2026-98108

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-2026-98108, 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: Bluetooth: L2CAP: fix chan mode for LE_CONN_REQ + EXT_FLOWCTL pchan l2cap_new_connection() sets default value of channel mode to match the parent channel. l2cap_le_connect_req() left this at the default, and created L2CAP_MODE_EXT_FLOWCTL channels if listening pchan has that mode. This causes FLAG_DEFER_SETUP channels to reply to L2CAP_LE_CONN_REQ with L2CAP_ECRED_CONN_RSP, which is incorrect. It can also result to stack OOB write (of l2cap_alloc_cid determined values) in l2cap_ecred_rsp_defer(), as l2cap_le_connect_req() does not limit maximum number of deferred channels or check for duplicate ident. Fix by setting chan->mode correctly in l2cap_le_connect_req(). Also check channel mode in l2cap_ecred_rsp_defer(), and do WARN_ON_ONCE instead of OOB write to make it less brittle.

References

NVD — CVE-2026-98108 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98108
git.kernel.org/stable/c/0e1fc7cab9... WEB
https://git.kernel.org/stable/c/0e1fc7cab95ad958e55d70a5dfaaea687c9c639f
git.kernel.org/stable/c/1074bcc57f... WEB
https://git.kernel.org/stable/c/1074bcc57f741223f9fa82ce6afe5c3d783e4d10
git.kernel.org/stable/c/4ef05db5b0... WEB
https://git.kernel.org/stable/c/4ef05db5b08b176a551b4a6287372045998806b0
git.kernel.org/stable/c/564ae0e05e... WEB
https://git.kernel.org/stable/c/564ae0e05e598aa895b9dbd18cb7d6eb64752869
git.kernel.org/stable/c/5d5a625cbc... WEB
https://git.kernel.org/stable/c/5d5a625cbc854d4c4f68e4b16fcf6e682d9a9ed1
git.kernel.org/stable/c/6cb79e6499... WEB
https://git.kernel.org/stable/c/6cb79e6499228cfdbd4b3301371ce74d01cd2f80
git.kernel.org/stable/c/aab1793899... WEB
https://git.kernel.org/stable/c/aab17938998b29e75c3324763411aef3e300fc67
git.kernel.org/stable/c/ad0f44a3f1... WEB
https://git.kernel.org/stable/c/ad0f44a3f1f688558ed876a0702bc2c82b0df689

Frequently Asked Questions

What is CVE-2026-98108?
CVE-2026-98108 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-2026-98108?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-98108?
CVE-2026-98108 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-98108?
CVE-2026-98108 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98108?
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-q3c9-52vx-cgp8",
  "modified" : "2026-10-03T12:31:27Z",
  "published" : "2026-09-25T12:31:36Z",
  "aliases" : [ "CVE-2026-98108" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: fix chan mode for LE_CONN_REQ + EXT_FLOWCTL pchan\n\nl2cap_new_connection() sets default value of channel mode to match the\nparent channel.  l2cap_le_connect_req() left this at the default, and\ncreated L2CAP_MODE_EXT_FLOWCTL channels if listening pchan has that\nmode.  This causes FLAG_DEFER_SETUP channels to reply to\nL2CAP_LE_CONN_REQ with L2CAP_ECRED_CONN_RSP, which is incorrect.\n\nIt can also result to stack OOB write (of l2cap_alloc_cid determined\nvalues) in l2cap_ecred_rsp_defer(), as l2cap_le_connect_req() does not\nlimit maximum number of deferred channels or check for duplicate ident.\n\nFix by setting chan->mode correctly in l2cap_le_connect_req().\n\nAlso check channel mode in l2cap_ecred_rsp_defer(), and do WARN_ON_ONCE\ninstead of OOB write to make it less brittle.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98108"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0e1fc7cab95ad958e55d70a5dfaaea687c9c639f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1074bcc57f741223f9fa82ce6afe5c3d783e4d10"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4ef05db5b08b176a551b4a6287372045998806b0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/564ae0e05e598aa895b9dbd18cb7d6eb64752869"
  }, {
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6cb79e6499228cfdbd4b3301371ce74d01cd2f80"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aab17938998b29e75c3324763411aef3e300fc67"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ad0f44a3f1f688558ed876a0702bc2c82b0df689"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-25T11:17:41Z"
  }
}