CVE-2026-80854: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-g824-q393-34qq
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Advisory Summary

CVE-2026-80854 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-2026-80854 at a Glance

CVE Identifier CVE-2026-80854
GHSA Identifier GHSA-g824-q393-34qq
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-2026-80854

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-2026-80854, 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: f_tcm: keep port count until LUN teardown completes tcm_usbg_drop_nexus() permits session removal once tpg_port_count reaches zero. However, usbg_port_unlink() currently decrements that count from the fabric_pre_unlink() callback, before core_dev_del_lun() waits for active se_lun references to drain. If removal of the last LUN races a nexus removal, the latter can observe a zero port count and call target_remove_session(). This frees sess_cmd_map while an in-flight struct usbg_cmd, including its work item, can still be accessed. Overlapping the last-LUN unlink with nexus removal reproduces this lifetime violation as a DEBUG_OBJECTS "free active" warning for usbg_cmd_work, followed by a target-core BUG/Oops. The generic target-core unlink path has no callback after core_dev_del_lun() completes. Add an optional fabric_post_unlink() callback and use it for the f_tcm port count. The count now remains nonzero until core_dev_del_lun() has finished draining active LUN references, preventing nexus removal from freeing the session during command completion.

References

NVD — CVE-2026-80854 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80854
git.kernel.org/stable/c/178f59a0bc... WEB
https://git.kernel.org/stable/c/178f59a0bccd3f66cdfa5184310f31a58b7257c4
git.kernel.org/stable/c/2efbfd4244... WEB
https://git.kernel.org/stable/c/2efbfd42441d3ef8137aff2d59e9835e1d5ae780
git.kernel.org/stable/c/85aa61fedc... WEB
https://git.kernel.org/stable/c/85aa61fedcb4eb13f3dc5db73f6dc359f41f5d95
git.kernel.org/stable/c/ad6f0375d2... WEB
https://git.kernel.org/stable/c/ad6f0375d2e93a1d8c015463e5e92dfcb26e311b
git.kernel.org/stable/c/bbd6aa311a... WEB
https://git.kernel.org/stable/c/bbd6aa311a9f4dd17822c7557451458d3d2e980b
git.kernel.org/stable/c/c1f359d9a5... WEB
https://git.kernel.org/stable/c/c1f359d9a5efed458946063de65ddbeaacc4f165
git.kernel.org/stable/c/c39d0916da... WEB
https://git.kernel.org/stable/c/c39d0916da47d94909391876c9e5bd429ea7b1b9
git.kernel.org/stable/c/c494c5562c... WEB
https://git.kernel.org/stable/c/c494c5562ca69b61a82f566e3b87a445d2c28929
git.kernel.org/stable/c/eaa96a8458... WEB
https://git.kernel.org/stable/c/eaa96a8458f54d6cf0954242ab8b1df2a6fccafa

Frequently Asked Questions

What is CVE-2026-80854?
CVE-2026-80854 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-2026-80854?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80854?
CVE-2026-80854 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80854?
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-g824-q393-34qq",
  "modified" : "2026-09-04T18:31:29Z",
  "published" : "2026-09-04T18:31:29Z",
  "aliases" : [ "CVE-2026-80854" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_tcm: keep port count until LUN teardown completes\n\ntcm_usbg_drop_nexus() permits session removal once tpg_port_count\nreaches zero. However, usbg_port_unlink() currently decrements that\ncount from the fabric_pre_unlink() callback, before core_dev_del_lun()\nwaits for active se_lun references to drain.\n\nIf removal of the last LUN races a nexus removal, the latter can observe\na zero port count and call target_remove_session(). This frees\nsess_cmd_map while an in-flight struct usbg_cmd, including its work item,\ncan still be accessed.\n\nOverlapping the last-LUN unlink with nexus removal reproduces this\nlifetime violation as a DEBUG_OBJECTS \"free active\" warning for\nusbg_cmd_work, followed by a target-core BUG/Oops.\n\nThe generic target-core unlink path has no callback after\ncore_dev_del_lun() completes. Add an optional fabric_post_unlink()\ncallback and use it for the f_tcm port count. The count now remains\nnonzero until core_dev_del_lun() has finished draining active LUN\nreferences, preventing nexus removal from freeing the session during\ncommand completion.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80854"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/178f59a0bccd3f66cdfa5184310f31a58b7257c4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2efbfd42441d3ef8137aff2d59e9835e1d5ae780"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/85aa61fedcb4eb13f3dc5db73f6dc359f41f5d95"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ad6f0375d2e93a1d8c015463e5e92dfcb26e311b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bbd6aa311a9f4dd17822c7557451458d3d2e980b"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c1f359d9a5efed458946063de65ddbeaacc4f165"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c39d0916da47d94909391876c9e5bd429ea7b1b9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c494c5562ca69b61a82f566e3b87a445d2c28929"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eaa96a8458f54d6cf0954242ab8b1df2a6fccafa"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:14Z"
  }
}