CVE-2026-68405: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-qx36-wgrc-gggh
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Advisory Summary

CVE-2026-68405 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-2026-68405 at a Glance

CVE Identifier CVE-2026-68405
GHSA Identifier GHSA-qx36-wgrc-gggh
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-2026-68405

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-2026-68405, 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: wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock ieee80211_do_stop() removes AP_VLAN packets from the parent AP ps->bc_buf while holding ps->bc_buf.lock with IRQs disabled. It then calls ieee80211_free_txskb() before dropping the lock. ieee80211_free_txskb() is not just a passive SKB release. For SKBs with TX status state it can report a dropped frame through cfg80211/nl80211, and that path can reach netlink tap transmit. This is the same reason the pending queue cleanup in ieee80211_do_stop() already unlinks SKBs under the queue lock and frees them after IRQ state is restored. The buggy scenario involves two paths, with each column showing the order within that path: AP_VLAN management TX: AP_VLAN stop: 1. attach ACK-status state 1. clear the running state 2. queue a multicast SKB on 2. take ps->bc_buf.lock with IRQs parent ps->bc_buf disabled 3. unlink the AP_VLAN SKB 4. call ieee80211_free_txskb() Unlink matching AP_VLAN SKBs from ps->bc_buf under the existing lock, but move them to a local free queue. Drop the lock and restore IRQ state before calling ieee80211_free_txskb(). WARNING: kernel/softirq.c:430 at __local_bh_enable_ip

References

NVD — CVE-2026-68405 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68405
git.kernel.org/stable/c/0d2619e708... WEB
https://git.kernel.org/stable/c/0d2619e708e2ef02ba1c91642ea261d3f19d8f9a
git.kernel.org/stable/c/4b8abf43bf... WEB
https://git.kernel.org/stable/c/4b8abf43bf34791c99d99dc3be13f897adefc461
git.kernel.org/stable/c/659a81b62a... WEB
https://git.kernel.org/stable/c/659a81b62a61440b85e02c09903be861ae7679e5
git.kernel.org/stable/c/962f755a47... WEB
https://git.kernel.org/stable/c/962f755a47d7ec3bbf6c709697d7f4c5f798441d
git.kernel.org/stable/c/a424985c3e... WEB
https://git.kernel.org/stable/c/a424985c3ef2a87ce6057a853e18d0c441a86be8
git.kernel.org/stable/c/aa01ef0ebb... WEB
https://git.kernel.org/stable/c/aa01ef0ebbc3289154229ef58e65baf289eb9789
git.kernel.org/stable/c/be9dfcb065... WEB
https://git.kernel.org/stable/c/be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef
git.kernel.org/stable/c/f3858d5b14... WEB
https://git.kernel.org/stable/c/f3858d5b1432098c1936e03d6e03dd0e33facf60

Frequently Asked Questions

What is CVE-2026-68405?
CVE-2026-68405 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-2026-68405?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-68405?
CVE-2026-68405 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68405?
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-qx36-wgrc-gggh",
  "modified" : "2026-08-19T18:32:18Z",
  "published" : "2026-08-10T15:33:50Z",
  "aliases" : [ "CVE-2026-68405" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock\n\nieee80211_do_stop() removes AP_VLAN packets from the parent AP\nps->bc_buf while holding ps->bc_buf.lock with IRQs disabled. It then\ncalls ieee80211_free_txskb() before dropping the lock.\n\nieee80211_free_txskb() is not just a passive SKB release. For SKBs with\nTX status state it can report a dropped frame through cfg80211/nl80211,\nand that path can reach netlink tap transmit. This is the same reason\nthe pending queue cleanup in ieee80211_do_stop() already unlinks SKBs\nunder the queue lock and frees them after IRQ state is restored.\n\nThe buggy scenario involves two paths, with each column showing the\norder within that path:\n\nAP_VLAN management TX:             AP_VLAN stop:\n1. attach ACK-status state         1. clear the running state\n2. queue a multicast SKB on        2. take ps->bc_buf.lock with IRQs\n   parent ps->bc_buf                  disabled\n                                   3. unlink the AP_VLAN SKB\n                                   4. call ieee80211_free_txskb()\n\nUnlink matching AP_VLAN SKBs from ps->bc_buf under the existing lock,\nbut move them to a local free queue. Drop the lock and restore IRQ state\nbefore calling ieee80211_free_txskb().\n\nWARNING: kernel/softirq.c:430 at __local_bh_enable_ip",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68405"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0d2619e708e2ef02ba1c91642ea261d3f19d8f9a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4b8abf43bf34791c99d99dc3be13f897adefc461"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/659a81b62a61440b85e02c09903be861ae7679e5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/962f755a47d7ec3bbf6c709697d7f4c5f798441d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a424985c3ef2a87ce6057a853e18d0c441a86be8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aa01ef0ebbc3289154229ef58e65baf289eb9789"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f3858d5b1432098c1936e03d6e03dd0e33facf60"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:34Z"
  }
}