CVE-2026-90327: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-j842-pq84-9gpj
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Advisory Summary

CVE-2026-90327 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-2026-90327 at a Glance

CVE Identifier CVE-2026-90327
GHSA Identifier GHSA-j842-pq84-9gpj
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-2026-90327

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-2026-90327, 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: phonet: pep: do not write beyond optlen in getsockopt pep_getsockopt() clamps the reported length to the caller's buffer with min_t(), but then stores the value with put_user(val, (int __user *) optval), which always writes sizeof(int) bytes. A getsockopt() call with an optlen smaller than sizeof(int) thus reports the clamped length yet writes a full int, one to three bytes past the user buffer. Write the value with copy_to_user() bounded by len, so at most optlen bytes are copied, matching the length reported back to userspace.

References

NVD — CVE-2026-90327 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90327
git.kernel.org/stable/c/056eea1a20... WEB
https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7
git.kernel.org/stable/c/1bf499e438... WEB
https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa
git.kernel.org/stable/c/6054fed6ba... WEB
https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30
git.kernel.org/stable/c/77e5eb0e19... WEB
https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4
git.kernel.org/stable/c/95e0ed2439... WEB
https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff
git.kernel.org/stable/c/c4487e4d53... WEB
https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4
git.kernel.org/stable/c/eac733a0b6... WEB
https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2
git.kernel.org/stable/c/f97022fefe... WEB
https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802

Frequently Asked Questions

What is CVE-2026-90327?
CVE-2026-90327 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-2026-90327?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90327?
CVE-2026-90327 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90327?
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-j842-pq84-9gpj",
  "modified" : "2026-09-17T18:32:01Z",
  "published" : "2026-09-17T18:32:01Z",
  "aliases" : [ "CVE-2026-90327" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90327"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:30Z"
  }
}