CVE-2026-89569: Software Security Vulnerability Vulnerability

HIGH

Advisory Identifier: GHSA-xxfx-9m42-x999

CVSS 8.8

Published 2026-09-11

Advisory Summary

CVE-2026-89569 is a HIGH (CVSS 8.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89569 at a Glance

CVE Identifier CVE-2026-89569

GHSA Identifier GHSA-xxfx-9m42-x999

Severity HIGH

CVSS v3.1 Base Score 8.8

CWE Classification General Security Weakness

Affected Product Software

Package Ecosystem Maven

Published Date 2026-09-11

Last Updated 2026-09-14

Security Impact

CVSS: 8.8

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

Attack Vector Adjacent (AV:A)

Attack Complexity Low (AC:L)

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-2026-89569

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-2026-89569, 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: RFCOMM: serialize security confirmation handling rfcomm_security_cfm() looks up a session on session_list and then walks its DLC list without holding rfcomm_mutex. Since RFCOMM session teardown uses rfcomm_mutex, krfcommd can close and free the same session and DLCs concurrently: hci_rx_work krfcommd ----------- --------- rfcomm_session_get() rfcomm_lock() rfcomm_session_close() rfcomm_dlc_unlink() rfcomm_session_del() kfree(s) rfcomm_unlock() walk s->dlcs The callback can then read a freed session list head and touch freed DLCs while updating their flags or timers. Serialize the session lookup and DLC traversal in rfcomm_security_cfm() with rfcomm_mutex. This matches the existing RFCOMM session lifetime rules and prevents concurrent rfcomm_session_del() / rfcomm_dlc_unlink() from tearing the objects down while the callback is using them. KASAN reported: BUG: KASAN: slab-use-after-free in rfcomm_security_cfm+0x41c/0x440 Read of size 8 at addr ffff888111fb3960 by task kworker/u17:1/89 Workqueue: hci0 hci_rx_work Call Trace: rfcomm_security_cfm+0x41c/0x440 hci_encrypt_cfm+0x139/0x590 hci_encrypt_change_evt+0x37b/0xc40 hci_event_packet+0x71b/0xb20 hci_rx_work+0x293/0x730 Allocated by task 69: rfcomm_session_add+0x9e/0x2f0 rfcomm_run+0x44b/0x41e0 Freed by task 69: kfree+0x131/0x3c0 rfcomm_session_del+0x188/0x220 rfcomm_run+0x1985/0x41e0

References

NVD — CVE-2026-89569 NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-89569

git.kernel.org/stable/c/1b7841ffad... WEB

https://git.kernel.org/stable/c/1b7841ffad08e911e8c4b9470f3fa08423568940

git.kernel.org/stable/c/3873f34497... WEB

https://git.kernel.org/stable/c/3873f3449701b3dc98cba577923be6493598e7a1

git.kernel.org/stable/c/62ce8b33eb... WEB

https://git.kernel.org/stable/c/62ce8b33eb238cf18c15207332fbdc26d858f592

git.kernel.org/stable/c/759c185d0b... WEB

https://git.kernel.org/stable/c/759c185d0bbdb131357408f50b8735e04ed3caff

git.kernel.org/stable/c/7ded326410... WEB

https://git.kernel.org/stable/c/7ded3264106418c6456ccceaafd9fda596ce12c3

git.kernel.org/stable/c/82425b14f0... WEB

https://git.kernel.org/stable/c/82425b14f0fb22e46cfddc56d6465570f5ed0ce6

git.kernel.org/stable/c/946d76db77... WEB

https://git.kernel.org/stable/c/946d76db77ee5f922968ce558629ae47b381e3fc

git.kernel.org/stable/c/fbf7961964... WEB

https://git.kernel.org/stable/c/fbf7961964a6e93360179f64712320ae9a1e9577

Frequently Asked Questions

What is CVE-2026-89569?

CVE-2026-89569 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-2026-89569?

Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.

What is the CVSS score of CVE-2026-89569?

CVE-2026-89569 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

What CWE is associated with CVE-2026-89569?

CVE-2026-89569 is classified under General Security Weakness.

How can I check Maven dependencies for CVE-2026-89569?

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-xxfx-9m42-x999",
  "modified" : "2026-09-14T15:32:29Z",
  "published" : "2026-09-11T21:31:32Z",
  "aliases" : [ "CVE-2026-89569" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: serialize security confirmation handling\n\nrfcomm_security_cfm() looks up a session on session_list and then walks\nits DLC list without holding rfcomm_mutex. Since RFCOMM session teardown\nuses rfcomm_mutex, krfcommd can close and free the same session and DLCs\nconcurrently:\n\n  hci_rx_work                    krfcommd\n  -----------                    ---------\n  rfcomm_session_get()\n                                 rfcomm_lock()\n                                 rfcomm_session_close()\n                                   rfcomm_dlc_unlink()\n                                   rfcomm_session_del()\n                                     kfree(s)\n                                 rfcomm_unlock()\n  walk s->dlcs\n\nThe callback can then read a freed session list head and touch freed DLCs\nwhile updating their flags or timers.\n\nSerialize the session lookup and DLC traversal in rfcomm_security_cfm()\nwith rfcomm_mutex. This matches the existing RFCOMM session lifetime\nrules and prevents concurrent rfcomm_session_del() / rfcomm_dlc_unlink()\nfrom tearing the objects down while the callback is using them.\n\nKASAN reported:\n\n  BUG: KASAN: slab-use-after-free in rfcomm_security_cfm+0x41c/0x440\n  Read of size 8 at addr ffff888111fb3960 by task kworker/u17:1/89\n  Workqueue: hci0 hci_rx_work\n  Call Trace:\n   rfcomm_security_cfm+0x41c/0x440\n   hci_encrypt_cfm+0x139/0x590\n   hci_encrypt_change_evt+0x37b/0xc40\n   hci_event_packet+0x71b/0xb20\n   hci_rx_work+0x293/0x730\n  Allocated by task 69:\n   rfcomm_session_add+0x9e/0x2f0\n   rfcomm_run+0x44b/0x41e0\n  Freed by task 69:\n   kfree+0x131/0x3c0\n   rfcomm_session_del+0x188/0x220\n   rfcomm_run+0x1985/0x41e0",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89569"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1b7841ffad08e911e8c4b9470f3fa08423568940"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3873f3449701b3dc98cba577923be6493598e7a1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/62ce8b33eb238cf18c15207332fbdc26d858f592"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/759c185d0bbdb131357408f50b8735e04ed3caff"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7ded3264106418c6456ccceaafd9fda596ce12c3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/82425b14f0fb22e46cfddc56d6465570f5ed0ce6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/946d76db77ee5f922968ce558629ae47b381e3fc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fbf7961964a6e93360179f64712320ae9a1e9577"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:40Z"
  }
}

CVSS V3

8.8 HIGH