CVE-2026-68342: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-wh63-3892-rjx3
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Advisory Summary

CVE-2026-68342 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-2026-68342 at a Glance

CVE Identifier CVE-2026-68342
GHSA Identifier GHSA-wh63-3892-rjx3
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-2026-68342

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-2026-68342, 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: ovpn: avoid putting unrelated P2P peer on socket release ovpn_peer_release_p2p() is called when an OVPN UDP socket is being destroyed. It checks the currently published P2P peer and releases it only if that peer still uses the socket being destroyed. A peer replacement can publish a new peer before the old UDP socket is destroyed. When the old socket destruction path runs afterwards, ovpn_peer_release_p2p() observes the new peer through ovpn->peer. Since the new peer uses a different socket, the function takes the socket mismatch branch. That branch still calls ovpn_peer_put(peer). At this point, however, peer is the currently published replacement peer, not the peer associated with the socket being destroyed. Dropping its reference can free it while ovpn->peer still points to it, leading to later use-after-free accesses from the peer and socket cleanup paths. KASAN reports this as a slab-use-after-free on the kmalloc-1k ovpn_peer object. In the reproducer, the object is allocated from ovpn_peer_new() via ovpn_nl_peer_new_doit(), and freed through ovpn_peer_release_rcu() from RCU callback processing. Observed access sites include ovpn_peer_remove(), ovpn_socket_release(), ovpn_nl_peer_del_notify(), and unlock_ovpn(). Fix this by returning from the socket mismatch branch without putting the peer.

References

NVD — CVE-2026-68342 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68342
git.kernel.org/stable/c/016a50379d... WEB
https://git.kernel.org/stable/c/016a50379d17b886d12a4efa5211a418e035fe70
git.kernel.org/stable/c/b52c5103f6... WEB
https://git.kernel.org/stable/c/b52c5103f64ee825996ca1ab8df7283cde8c5f86
git.kernel.org/stable/c/c5bf6b39be... WEB
https://git.kernel.org/stable/c/c5bf6b39be235ef578af4d39872f0c68cda3b937

Frequently Asked Questions

What is CVE-2026-68342?
CVE-2026-68342 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-2026-68342?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-68342?
CVE-2026-68342 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68342?
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-wh63-3892-rjx3",
  "modified" : "2026-08-10T15:33:47Z",
  "published" : "2026-08-10T15:33:47Z",
  "aliases" : [ "CVE-2026-68342" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\novpn: avoid putting unrelated P2P peer on socket release\n\novpn_peer_release_p2p() is called when an OVPN UDP socket is being\ndestroyed. It checks the currently published P2P peer and releases it only\nif that peer still uses the socket being destroyed.\n\nA peer replacement can publish a new peer before the old UDP socket is\ndestroyed. When the old socket destruction path runs afterwards,\novpn_peer_release_p2p() observes the new peer through ovpn->peer. Since the\nnew peer uses a different socket, the function takes the socket mismatch\nbranch.\n\nThat branch still calls ovpn_peer_put(peer). At this point, however, peer\nis the currently published replacement peer, not the peer associated with\nthe socket being destroyed. Dropping its reference can free it while\novpn->peer still points to it, leading to later use-after-free accesses\nfrom the peer and socket cleanup paths.\n\nKASAN reports this as a slab-use-after-free on the kmalloc-1k ovpn_peer\nobject. In the reproducer, the object is allocated from ovpn_peer_new() via\novpn_nl_peer_new_doit(), and freed through ovpn_peer_release_rcu() from RCU\ncallback processing. Observed access sites include ovpn_peer_remove(),\novpn_socket_release(), ovpn_nl_peer_del_notify(), and unlock_ovpn().\n\nFix this by returning from the socket mismatch branch without putting the\npeer.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68342"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/016a50379d17b886d12a4efa5211a418e035fe70"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b52c5103f64ee825996ca1ab8df7283cde8c5f86"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c5bf6b39be235ef578af4d39872f0c68cda3b937"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:24Z"
  }
}