CVE-2026-89891: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5cx6-377w-hc5f
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Advisory Summary

CVE-2026-89891 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-2026-89891 at a Glance

CVE Identifier CVE-2026-89891
GHSA Identifier GHSA-5cx6-377w-hc5f
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-2026-89891

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-2026-89891, 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: media: em28xx: fix use-after-free of dev_next->devlist on disconnect When a device with has_dual_ts=1 is probed and the is_audio_only path is taken, both dev and dev->dev_next are added to the global em28xx_devlist via em28xx_init_extension(). However, during disconnect, em28xx_close_extension(dev) only calls list_del(&dev->devlist), leaving dev->dev_next->devlist still linked in the global list. When dev_next is subsequently freed via kref_put(), its devlist entry becomes a dangling pointer in em28xx_devlist. The next device probe that calls em28xx_init_extension() triggers a list corruption BUG when list_add_tail detects the freed node. This bug was exposed by commit a368ecde8a50 ("USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor") which clears reserved bits in bEndpointAddress during endpoint parsing. This causes fuzzed endpoint addresses like 0xf3 to be normalized to 0x83, which em28xx interprets as a vendor audio endpoint, enabling the is_audio_only + has_dual_ts code path that was previously unreachable with such descriptors. Fix this by removing dev->dev_next->devlist from the global list in em28xx_close_extension() before the device is freed.

References

NVD — CVE-2026-89891 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89891
git.kernel.org/stable/c/0782807552... WEB
https://git.kernel.org/stable/c/0782807552b6aff41b4656c6c9076a3231d3e79d
git.kernel.org/stable/c/16cb1ee17e... WEB
https://git.kernel.org/stable/c/16cb1ee17e093175b4d9ae33202f68e5b108cca2
git.kernel.org/stable/c/1ed575b199... WEB
https://git.kernel.org/stable/c/1ed575b1991f68569eb589b7747d3bc26aa6a8a2
git.kernel.org/stable/c/20aacd8755... WEB
https://git.kernel.org/stable/c/20aacd87550be297dc39a3f9532dcfff91586510
git.kernel.org/stable/c/20c2c65f3d... WEB
https://git.kernel.org/stable/c/20c2c65f3d9f7c278dc9750531d3201ac8bf78b7
git.kernel.org/stable/c/826915b6b6... WEB
https://git.kernel.org/stable/c/826915b6b65e2d3251e7248ea54289a22d748c84
git.kernel.org/stable/c/da4b07da62... WEB
https://git.kernel.org/stable/c/da4b07da6281e39ce4c01e1227e036f3bf600e14
git.kernel.org/stable/c/f61720346f... WEB
https://git.kernel.org/stable/c/f61720346fdcc1a2deec59a2f6cbb0cc20d1dc18

Frequently Asked Questions

What is CVE-2026-89891?
CVE-2026-89891 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-2026-89891?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89891?
CVE-2026-89891 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89891?
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-5cx6-377w-hc5f",
  "modified" : "2026-09-16T12:30:40Z",
  "published" : "2026-09-16T12:30:40Z",
  "aliases" : [ "CVE-2026-89891" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: fix use-after-free of dev_next->devlist on disconnect\n\nWhen a device with has_dual_ts=1 is probed and the is_audio_only path\nis taken, both dev and dev->dev_next are added to the global\nem28xx_devlist via em28xx_init_extension(). However, during disconnect,\nem28xx_close_extension(dev) only calls list_del(&dev->devlist), leaving\ndev->dev_next->devlist still linked in the global list. When dev_next is\nsubsequently freed via kref_put(), its devlist entry becomes a dangling\npointer in em28xx_devlist. The next device probe that calls\nem28xx_init_extension() triggers a list corruption BUG when list_add_tail\ndetects the freed node.\n\nThis bug was exposed by commit a368ecde8a50 (\"USB: core: Fix duplicate\nendpoint bug by clearing reserved bits in the descriptor\") which clears\nreserved bits in bEndpointAddress during endpoint parsing. This causes\nfuzzed endpoint addresses like 0xf3 to be normalized to 0x83, which\nem28xx interprets as a vendor audio endpoint, enabling the\nis_audio_only + has_dual_ts code path that was previously unreachable\nwith such descriptors.\n\nFix this by removing dev->dev_next->devlist from the global list in\nem28xx_close_extension() before the device is freed.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89891"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0782807552b6aff41b4656c6c9076a3231d3e79d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/16cb1ee17e093175b4d9ae33202f68e5b108cca2"
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/20aacd87550be297dc39a3f9532dcfff91586510"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/da4b07da6281e39ce4c01e1227e036f3bf600e14"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f61720346fdcc1a2deec59a2f6cbb0cc20d1dc18"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:57Z"
  }
}