CVE-2026-89736: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-hjw3-qcfv-9g4p
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89736 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-2026-89736 at a Glance

CVE Identifier CVE-2026-89736
GHSA Identifier GHSA-hjw3-qcfv-9g4p
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-2026-89736

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-2026-89736, 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: usb: gadget: u_audio: Fix use-after-free on sound card disconnect g_audio_cleanup() invokes snd_card_free_when_closed() to initiate sound card teardown and immediately frees the underlying struct snd_uac_chip context. However, snd_card_free_when_closed() returns asynchronously while ALSA control elements (kctls) remain open in userspace. When userspace control applications access or close these open file descriptors, kctl callbacks attempt to dereference kctl->private_data pointing to &uac->c_prm or &uac->p_prm within the freed uac structure, resulting in a use-after-free (UAF) memory corruption. Fix this issue by deferring the destruction of struct snd_uac_chip until all references to the ALSA sound card are released. Register a custom card->private_free callback (u_audio_card_free) during g_audio_setup() that frees uac and its associated playback/capture request and ring buffers only when the sound card reference count drops to zero.

References

NVD — CVE-2026-89736 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89736
git.kernel.org/stable/c/4e747c864a... WEB
https://git.kernel.org/stable/c/4e747c864a88537e18b1ffc19a1954c9686bb8e1
git.kernel.org/stable/c/6f46762196... WEB
https://git.kernel.org/stable/c/6f46762196f04464e1050a9ee94e72b917db9010
git.kernel.org/stable/c/79a92896e2... WEB
https://git.kernel.org/stable/c/79a92896e2bb9471550c56fc23d8d93592f04c27
git.kernel.org/stable/c/8589659470... WEB
https://git.kernel.org/stable/c/858965947081d10d41d9a1010a540d3d5eea958b
git.kernel.org/stable/c/891a8d11f4... WEB
https://git.kernel.org/stable/c/891a8d11f4d5eb50b2ce7570f4f98204a7a57493
git.kernel.org/stable/c/a7ecd1a04f... WEB
https://git.kernel.org/stable/c/a7ecd1a04f4f485d7be6443d0f0b2c61a800cb82
git.kernel.org/stable/c/c74ff0b1a0... WEB
https://git.kernel.org/stable/c/c74ff0b1a0fca53d3ac185873c87d6a719b30a47
git.kernel.org/stable/c/f983793f03... WEB
https://git.kernel.org/stable/c/f983793f03148b097977f200298db215cd2d4438

Frequently Asked Questions

What is CVE-2026-89736?
CVE-2026-89736 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-2026-89736?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89736?
CVE-2026-89736 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-2026-89736?
CVE-2026-89736 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89736?
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-hjw3-qcfv-9g4p",
  "modified" : "2026-09-14T15:32:35Z",
  "published" : "2026-09-11T21:31:38Z",
  "aliases" : [ "CVE-2026-89736" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_audio: Fix use-after-free on sound card disconnect\n\ng_audio_cleanup() invokes snd_card_free_when_closed() to initiate sound\ncard teardown and immediately frees the underlying struct snd_uac_chip\ncontext. However, snd_card_free_when_closed() returns asynchronously\nwhile ALSA control elements (kctls) remain open in userspace.\n\nWhen userspace control applications access or close these open file\ndescriptors, kctl callbacks attempt to dereference kctl->private_data\npointing to &uac->c_prm or &uac->p_prm within the freed uac structure,\nresulting in a use-after-free (UAF) memory corruption.\n\nFix this issue by deferring the destruction of struct snd_uac_chip until\nall references to the ALSA sound card are released. Register a custom\ncard->private_free callback (u_audio_card_free) during g_audio_setup()\nthat frees uac and its associated playback/capture request and ring\nbuffers only when the sound card reference count drops to zero.",
  "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-2026-89736"
  }, {
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    "url" : "https://git.kernel.org/stable/c/4e747c864a88537e18b1ffc19a1954c9686bb8e1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6f46762196f04464e1050a9ee94e72b917db9010"
  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/891a8d11f4d5eb50b2ce7570f4f98204a7a57493"
  }, {
    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c74ff0b1a0fca53d3ac185873c87d6a719b30a47"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f983793f03148b097977f200298db215cd2d4438"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:20:04Z"
  }
}