CVE-2026-80836: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4c27-p37x-4j2h
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Advisory Summary

CVE-2026-80836 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-2026-80836 at a Glance

CVE Identifier CVE-2026-80836
GHSA Identifier GHSA-4c27-p37x-4j2h
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-2026-80836

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-2026-80836, 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: crypto: virtio - bound the akcipher result length virtio_crypto_dataq_akcipher_callback() sets the result length from the device-reported response length without bounding it to the destination buffer, which was allocated for the original request length. sg_copy_from_buffer() then reads that many bytes from the destination buffer; a backend reporting a larger length over-reads adjacent kernel heap into the caller's scatterlist (an out-of-bounds read). Clamp the reported length to the originally requested destination length. A conforming device reports no more than that, so valid results are unaffected.

References

NVD — CVE-2026-80836 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80836
git.kernel.org/stable/c/12c4f29e97... WEB
https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe
git.kernel.org/stable/c/1f9f877b1e... WEB
https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252
git.kernel.org/stable/c/3fda114a42... WEB
https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2
git.kernel.org/stable/c/5545de5050... WEB
https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca
git.kernel.org/stable/c/bd33cb19bc... WEB
https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78
git.kernel.org/stable/c/f77a956f6a... WEB
https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92

Frequently Asked Questions

What is CVE-2026-80836?
CVE-2026-80836 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-2026-80836?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-80836?
CVE-2026-80836 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80836?
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-4c27-p37x-4j2h",
  "modified" : "2026-10-03T12:31:04Z",
  "published" : "2026-09-04T18:31:28Z",
  "aliases" : [ "CVE-2026-80836" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: virtio - bound the akcipher result length\n\nvirtio_crypto_dataq_akcipher_callback() sets the result length from the\ndevice-reported response length without bounding it to the destination\nbuffer, which was allocated for the original request length.\nsg_copy_from_buffer() then reads that many bytes from the destination\nbuffer; a backend reporting a larger length over-reads adjacent kernel\nheap into the caller's scatterlist (an out-of-bounds read).\n\nClamp the reported length to the originally requested destination length.\nA conforming device reports no more than that, so valid results are\nunaffected.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80836"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/12c4f29e97f31b013f77ad65ba7daeb02aaa6abe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1f9f877b1ef1fbd4ee95571cddf39c8002cee252"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3fda114a42f1510a4ec8a0b17a0cfc997952ccc2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5545de5050cbc3594506d74f2c392b0716cf8bca"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bd33cb19bcb432a4dd5e8f50be5e2547af1e9f78"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f77a956f6a19f9463ef1527c9d0cda50dded6b92"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-04T16:18:11Z"
  }
}