CVE-2026-98215: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4rhv-8vqv-p9w9
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Advisory Summary

CVE-2026-98215 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-2026-98215 at a Glance

CVE Identifier CVE-2026-98215
GHSA Identifier GHSA-4rhv-8vqv-p9w9
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-2026-98215

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-2026-98215, 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: selinux: preserve user SID across nested backing files SELinux saves the user file SID in a backing-file security blob so it remains available after mmap() replaces vma->vm_file with a backing file. For nested backing files (overlayfs over overlayfs, or FUSE passthrough backed by overlayfs), user_file may itself be a backing file. Its fsec->sid is the SID of the mounter that opened it, rather than the user that opened the top-level file. mprotect() then checks fd { use } against the mounter SID. This can incorrectly deny access without a domain transition, or check the wrong target SID after one. Copy the saved user SID when user_file is a backing file. Keep using the regular file SID for the first backing layer. With two nested overlayfs mounts and SELinux enforcing, mprotect(PROT_READ) returns EACCES with an fd { use } denial against the mounter SID. With this change, mprotect() succeeds. Tested on arm64 QEMU with a small BusyBox initramfs and a purpose-built SELinux policy. The original test was also repeated with Fedora Cloud Base 44 userspace and gave the same result.

References

NVD — CVE-2026-98215 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98215
git.kernel.org/stable/c/6aaeec59aa... WEB
https://git.kernel.org/stable/c/6aaeec59aadcd1eafc18b049f1b759fb6b9d9569
git.kernel.org/stable/c/8c0c602202... WEB
https://git.kernel.org/stable/c/8c0c602202b9a4909b00bc3354e3c0355bc69e65
git.kernel.org/stable/c/9d99b770e7... WEB
https://git.kernel.org/stable/c/9d99b770e7b67b00bdef9005b928aad13e1d679b
git.kernel.org/stable/c/caa1b913d9... WEB
https://git.kernel.org/stable/c/caa1b913d90d5dc07073733326d2af0f0288f089
git.kernel.org/stable/c/ff20d16b2e... WEB
https://git.kernel.org/stable/c/ff20d16b2e8230c034e21540043df47222dcc09b

Frequently Asked Questions

What is CVE-2026-98215?
CVE-2026-98215 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-2026-98215?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98215?
CVE-2026-98215 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98215?
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-4rhv-8vqv-p9w9",
  "modified" : "2026-10-06T09:31:30Z",
  "published" : "2026-10-06T09:31:30Z",
  "aliases" : [ "CVE-2026-98215" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: preserve user SID across nested backing files\n\nSELinux saves the user file SID in a backing-file security blob so it\nremains available after mmap() replaces vma->vm_file with a backing file.\n\nFor nested backing files (overlayfs over overlayfs, or FUSE passthrough\nbacked by overlayfs), user_file may itself be a backing file.  Its\nfsec->sid is the SID of the mounter that opened it, rather than the user\nthat opened the top-level file.  mprotect() then checks fd { use } against\nthe mounter SID.  This can incorrectly deny access without a domain\ntransition, or check the wrong target SID after one.\n\nCopy the saved user SID when user_file is a backing file.  Keep using the\nregular file SID for the first backing layer.\n\nWith two nested overlayfs mounts and SELinux enforcing,\nmprotect(PROT_READ) returns EACCES with an fd { use } denial against the\nmounter SID.  With this change, mprotect() succeeds.\n\nTested on arm64 QEMU with a small BusyBox initramfs and a purpose-built\nSELinux policy.  The original test was also repeated with Fedora Cloud\nBase 44 userspace and gave the same result.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98215"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6aaeec59aadcd1eafc18b049f1b759fb6b9d9569"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8c0c602202b9a4909b00bc3354e3c0355bc69e65"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d99b770e7b67b00bdef9005b928aad13e1d679b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/caa1b913d90d5dc07073733326d2af0f0288f089"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ff20d16b2e8230c034e21540043df47222dcc09b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-06T09:18:08Z"
  }
}