CVE-2026-68450: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-mmwm-g85r-pjj6
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Advisory Summary

CVE-2026-68450 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-2026-68450 at a Glance

CVE Identifier CVE-2026-68450
GHSA Identifier GHSA-mmwm-g85r-pjj6
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-2026-68450

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-2026-68450, 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: btrfs: free mapping node on duplicate reloc root insert __add_reloc_root() allocates a mapping_node before inserting it into rc->reloc_root_tree. If rb_simple_insert() finds an existing entry, it returns the existing rb_node and leaves the newly allocated node unlinked. The error path then returns -EEXIST without freeing the new node. Since the node was never inserted into reloc_root_tree, the later cleanup in put_reloc_control() cannot find it either. Free the newly allocated node before returning -EEXIST. The callers currently assert that -EEXIST should not happen, so this is a defensive cleanup for an unexpected duplicate insert path. If the path is ever reached, the local allocation should still be released.

References

NVD — CVE-2026-68450 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68450
git.kernel.org/stable/c/14a8be9428... WEB
https://git.kernel.org/stable/c/14a8be9428435ee17f17fae7991215c246b7fd43
git.kernel.org/stable/c/29d9746812... WEB
https://git.kernel.org/stable/c/29d9746812d8b7c37d594f484e994fd552c3ec33
git.kernel.org/stable/c/6a8269b645... WEB
https://git.kernel.org/stable/c/6a8269b6459ed870a8156c106a0f597383907872
git.kernel.org/stable/c/797dc56714... WEB
https://git.kernel.org/stable/c/797dc567146c7e3c4f8d9680e4fbc76e0a6d9151
git.kernel.org/stable/c/92bedc0455... WEB
https://git.kernel.org/stable/c/92bedc0455552b42ada1a1f42b0e3a8593cdfccc
git.kernel.org/stable/c/ae0629ff9c... WEB
https://git.kernel.org/stable/c/ae0629ff9ccb836416ada129f4edc7efea6eaaad
git.kernel.org/stable/c/b7c5b8e1d5... WEB
https://git.kernel.org/stable/c/b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8

Frequently Asked Questions

What is CVE-2026-68450?
CVE-2026-68450 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-2026-68450?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-68450?
CVE-2026-68450 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68450?
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-mmwm-g85r-pjj6",
  "modified" : "2026-08-19T18:32:21Z",
  "published" : "2026-08-12T03:31:17Z",
  "aliases" : [ "CVE-2026-68450" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: free mapping node on duplicate reloc root insert\n\n__add_reloc_root() allocates a mapping_node before inserting it into\nrc->reloc_root_tree.  If rb_simple_insert() finds an existing entry, it\nreturns the existing rb_node and leaves the newly allocated node unlinked.\n\nThe error path then returns -EEXIST without freeing the new node.  Since\nthe node was never inserted into reloc_root_tree, the later cleanup in\nput_reloc_control() cannot find it either.\n\nFree the newly allocated node before returning -EEXIST.\n\nThe callers currently assert that -EEXIST should not happen, so this is a\ndefensive cleanup for an unexpected duplicate insert path.  If the path is\never reached, the local allocation should still be released.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68450"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14a8be9428435ee17f17fae7991215c246b7fd43"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/29d9746812d8b7c37d594f484e994fd552c3ec33"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6a8269b6459ed870a8156c106a0f597383907872"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/797dc567146c7e3c4f8d9680e4fbc76e0a6d9151"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/92bedc0455552b42ada1a1f42b0e3a8593cdfccc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ae0629ff9ccb836416ada129f4edc7efea6eaaad"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-12T01:17:07Z"
  }
}