CVE-2026-46273: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-c3jf-v88j-7gvj
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CVSS 8.6
CWE-400
Published
Advisory Summary

CVE-2026-46273 is a HIGH (CVSS 8.6) security vulnerability vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly control the allocation and maintenance of a limited resource.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46273 at a Glance

CVE Identifier CVE-2026-46273
GHSA Identifier GHSA-c3jf-v88j-7gvj
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.6

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

Attack Vector Network (AV:N)
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-2026-46273

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-2026-46273, 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 CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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: ibmveth: Disable GSO for packets with small MSS Some physical adapters on Power systems do not support segmentation offload when the MSS is less than 224 bytes. Attempting to send such packets causes the adapter to freeze, stopping all traffic until manually reset. Implement ndo_features_check to disable GSO for packets with small MSS values. The network stack will perform software segmentation instead. The 224-byte minimum matches ibmvnic commit <f10b09ef687f> ("ibmvnic: Enforce stronger sanity checks on GSO packets") which uses the same physical adapters in SEA configurations. The issue occurs specifically when the hardware attempts to perform segmentation (gso_segs > 1) with a small MSS. Single-segment GSO packets (gso_segs == 1) do not trigger the problematic LSO code path and are transmitted normally without segmentation. Add an ndo_features_check callback to disable GSO when MSS < 224 bytes. Also call vlan_features_check() to ensure proper handling of VLAN packets, particularly QinQ (802.1ad) configurations where the hardware parser may not support certain offload features. Validated using iptables to force small MSS values. Without the fix, the adapter freezes. With the fix, packets are segmented in software and transmission succeeds. Comprehensive regression testing completedd (MSS tests, performance, stability).

References

NVD — CVE-2026-46273 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46273
git.kernel.org/stable/c/1cdf5dbcec... WEB
https://git.kernel.org/stable/c/1cdf5dbcec988d06f5f720bdf89e91073f77fa10
git.kernel.org/stable/c/3af24f0c4c... WEB
https://git.kernel.org/stable/c/3af24f0c4c31f18a4a2d927990759194832bb6e9
git.kernel.org/stable/c/82bc89fbb8... WEB
https://git.kernel.org/stable/c/82bc89fbb82d9396fb4eaee8720ea85e2e787957
git.kernel.org/stable/c/86fc645848... WEB
https://git.kernel.org/stable/c/86fc64584811d43c9ccd74447de58620189d8b77
git.kernel.org/stable/c/9a5e984d7a... WEB
https://git.kernel.org/stable/c/9a5e984d7af910e46dcbed3ce77873e000a4f77d
git.kernel.org/stable/c/c1f261863e... WEB
https://git.kernel.org/stable/c/c1f261863e65b508f37416dfbc5c5d911c9b9233
git.kernel.org/stable/c/cc427d24ac... WEB
https://git.kernel.org/stable/c/cc427d24ac6442ffdeafd157a63c7c5b73ed4de4
git.kernel.org/stable/c/db8012c631... WEB
https://git.kernel.org/stable/c/db8012c631cb845e9ae2b4b531e17d86c9519755

Frequently Asked Questions

What is CVE-2026-46273?
CVE-2026-46273 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-46273?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46273?
CVE-2026-46273 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
What CWE is associated with CVE-2026-46273?
CVE-2026-46273 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2026-46273?
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-c3jf-v88j-7gvj",
  "modified" : "2026-06-05T09:33:46Z",
  "published" : "2026-06-03T18:33:13Z",
  "aliases" : [ "CVE-2026-46273" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nibmveth: Disable GSO for packets with small MSS\n\nSome physical adapters on Power systems do not support segmentation\noffload when the MSS is less than 224 bytes. Attempting to send such\npackets causes the adapter to freeze, stopping all traffic until\nmanually reset.\n\nImplement ndo_features_check to disable GSO for packets with small MSS\nvalues. The network stack will perform software segmentation instead.\n\nThe 224-byte minimum matches ibmvnic\ncommit <f10b09ef687f> (\"ibmvnic: Enforce stronger sanity checks\non GSO packets\")\nwhich uses the same physical adapters in SEA configurations.\n\nThe issue occurs specifically when the hardware attempts to perform\nsegmentation (gso_segs > 1) with a small MSS. Single-segment GSO packets\n(gso_segs == 1) do not trigger the problematic LSO code path and are\ntransmitted normally without segmentation.\n\nAdd an ndo_features_check callback to disable GSO when MSS < 224 bytes.\nAlso call vlan_features_check() to ensure proper handling of VLAN packets,\nparticularly QinQ (802.1ad) configurations where the hardware parser may\nnot support certain offload features.\n\nValidated using iptables to force small MSS values. Without the fix,\nthe adapter freezes. With the fix, packets are segmented in software\nand transmission succeeds. Comprehensive regression testing completedd\n(MSS tests, performance, stability).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/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-2026-46273"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1cdf5dbcec988d06f5f720bdf89e91073f77fa10"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3af24f0c4c31f18a4a2d927990759194832bb6e9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/82bc89fbb82d9396fb4eaee8720ea85e2e787957"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/86fc64584811d43c9ccd74447de58620189d8b77"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9a5e984d7af910e46dcbed3ce77873e000a4f77d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c1f261863e65b508f37416dfbc5c5d911c9b9233"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cc427d24ac6442ffdeafd157a63c7c5b73ed4de4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/db8012c631cb845e9ae2b4b531e17d86c9519755"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-03T18:16:29Z"
  }
}