CVE-2026-46321: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3qqh-vm6g-ghw6
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CVSS 7.1
Published
Advisory Summary

CVE-2026-46321 is a HIGH (CVSS 7.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46321 at a Glance

CVE Identifier CVE-2026-46321
GHSA Identifier GHSA-3qqh-vm6g-ghw6
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-46321

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-2026-46321, 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: tun: free page on short-frame rejection in tun_xdp_one() tun_xdp_one() returns -EINVAL on a frame shorter than ETH_HLEN without freeing the page that vhost_net_build_xdp() allocated for it. tun_sendmsg() discards that -EINVAL and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page; each short frame in a batch leaks one page-frag chunk. A local process that can open /dev/net/tun and /dev/vhost-net can hit this path: it attaches a tun/tap device as the vhost-net backend and feeds TX descriptors whose length minus the virtio-net header is below ETH_HLEN. Each kick leaks the page-frag chunks for that batch, and a tight submission loop exhausts host memory and triggers an OOM panic. Free the page before returning -EINVAL, matching the XDP-program error path in the same function.

References

NVD — CVE-2026-46321 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46321
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/0a6f46a933... WEB
https://git.kernel.org/stable/c/0a6f46a9332ad6958992d64d3b3a81a80b2ca940
git.kernel.org/stable/c/0e8211fcf9... WEB
https://git.kernel.org/stable/c/0e8211fcf9426f5adddf32516ba0f400ceb9544d
git.kernel.org/stable/c/37a1c268c2... WEB
https://git.kernel.org/stable/c/37a1c268c2c8090bf4dc552d732bd23ba36f8eb0
git.kernel.org/stable/c/5b34f9e4fe... WEB
https://git.kernel.org/stable/c/5b34f9e4fe2f203724a6e893d6df0316b9670057
git.kernel.org/stable/c/69863ff272... WEB
https://git.kernel.org/stable/c/69863ff2720a0e9871f1a5710f2a33a94217fee0
git.kernel.org/stable/c/98c67be9eb... WEB
https://git.kernel.org/stable/c/98c67be9eb9de72465a071949e84a3cdb8fab5a3
git.kernel.org/stable/c/e915445942... WEB
https://git.kernel.org/stable/c/e915445942af6dcea628bf66d6241641201a0c41
git.kernel.org/stable/c/f4feb1e200... WEB
https://git.kernel.org/stable/c/f4feb1e20058e407cb00f45aff47f5b7e19a6bbf

Frequently Asked Questions

What is CVE-2026-46321?
CVE-2026-46321 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-2026-46321?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46321?
CVE-2026-46321 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
What CWE is associated with CVE-2026-46321?
CVE-2026-46321 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-46321?
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-3qqh-vm6g-ghw6",
  "modified" : "2026-10-15T03:36:07Z",
  "published" : "2026-06-09T15:32:18Z",
  "aliases" : [ "CVE-2026-46321" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntun: free page on short-frame rejection in tun_xdp_one()\n\ntun_xdp_one() returns -EINVAL on a frame shorter than ETH_HLEN without\nfreeing the page that vhost_net_build_xdp() allocated for it.\ntun_sendmsg() discards that -EINVAL and still returns total_len, so\nvhost_tx_batch() takes the success path and never frees the page; each\nshort frame in a batch leaks one page-frag chunk.\n\nA local process that can open /dev/net/tun and /dev/vhost-net can hit\nthis path: it attaches a tun/tap device as the vhost-net backend and\nfeeds TX descriptors whose length minus the virtio-net header is below\nETH_HLEN. Each kick leaks the page-frag chunks for that batch, and a\ntight submission loop exhausts host memory and triggers an OOM panic.\nFree the page before returning -EINVAL, matching the XDP-program error\npath in the same function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46321"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0a6f46a9332ad6958992d64d3b3a81a80b2ca940"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0e8211fcf9426f5adddf32516ba0f400ceb9544d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/37a1c268c2c8090bf4dc552d732bd23ba36f8eb0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5b34f9e4fe2f203724a6e893d6df0316b9670057"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/69863ff2720a0e9871f1a5710f2a33a94217fee0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/98c67be9eb9de72465a071949e84a3cdb8fab5a3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e915445942af6dcea628bf66d6241641201a0c41"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f4feb1e20058e407cb00f45aff47f5b7e19a6bbf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-09T13:16:37Z"
  }
}