CVE-2026-80543: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-r429-pxmh-55v9
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Advisory Summary

CVE-2026-80543 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-2026-80543 at a Glance

CVE Identifier CVE-2026-80543
GHSA Identifier GHSA-r429-pxmh-55v9
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-2026-80543

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-2026-80543, 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: s390/zcrypt: Pad trailing CCA or EP11 message with zeros The both functions xcrb_msg_to_type6cprb_msgx() and xcrb_msg_to_type6_ep11cprb_msgx() copy the user space message into a kernel buffer based on the message length. But on further processing the message is supposed to be 4 byte length adjusted. Thus up to 3 bytes of uninitialized kernel memory are forwarded to further processing steps and may unwanted expose kernel memory to the crypto card firmware. This patch contains code to pad the gap between user space copied message and message buffer length sent down to further processing of the CCA or EP11 message to zeros.

References

NVD — CVE-2026-80543 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80543
git.kernel.org/stable/c/2db92a56b0... WEB
https://git.kernel.org/stable/c/2db92a56b000173d332b6c30f38a5a4444e4355a
git.kernel.org/stable/c/44e61f1834... WEB
https://git.kernel.org/stable/c/44e61f1834831f873af5a4fec5a5e432b929c6a2
git.kernel.org/stable/c/eb36325447... WEB
https://git.kernel.org/stable/c/eb363254472493e3458156fc11fd56dca92f4333

Frequently Asked Questions

What is CVE-2026-80543?
CVE-2026-80543 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-2026-80543?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80543?
CVE-2026-80543 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80543?
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-r429-pxmh-55v9",
  "modified" : "2026-10-15T12:30:44Z",
  "published" : "2026-10-15T12:30:44Z",
  "aliases" : [ "CVE-2026-80543" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/zcrypt: Pad trailing CCA or EP11 message with zeros\n\nThe both functions xcrb_msg_to_type6cprb_msgx() and\nxcrb_msg_to_type6_ep11cprb_msgx() copy the user space message into a\nkernel buffer based on the message length. But on further processing\nthe message is supposed to be 4 byte length adjusted. Thus up to 3\nbytes of uninitialized kernel memory are forwarded to further\nprocessing steps and may unwanted expose kernel memory to the crypto\ncard firmware.\n\nThis patch contains code to pad the gap between user space copied\nmessage and message buffer length sent down to further processing of\nthe CCA or EP11 message to zeros.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80543"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2db92a56b000173d332b6c30f38a5a4444e4355a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/44e61f1834831f873af5a4fec5a5e432b929c6a2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eb363254472493e3458156fc11fd56dca92f4333"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:17:08Z"
  }
}