CVE-2026-93049: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-vm56-mgvf-744c
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Advisory Summary

CVE-2026-93049 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-2026-93049 at a Glance

CVE Identifier CVE-2026-93049
GHSA Identifier GHSA-vm56-mgvf-744c
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-2026-93049

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-2026-93049, 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: mtd: mtdswap: Avoid freeing registered blktrans device twice In mtdswap_add_mtd(), debugfs setup failure after successful blktrans registration can free mbd_dev twice. add_mtd_blktrans_dev() initializes the blktrans device reference and publishes the disk. Once that succeeds, del_mtd_blktrans_dev() tears the disk down and drops the blktrans reference; when that reference reaches zero, blktrans_dev_release() frees the mtd_blktrans_dev. The debugfs failure path called del_mtd_blktrans_dev(mbd_dev), then fell through the common cleanup label and called kfree(mbd_dev) again. Clear the local pointer after deregistration so the common cleanup can still release the mtdswap state without freeing the blktrans object twice. This issue was found by a static analysis checker and confirmed by manual source review.

References

NVD — CVE-2026-93049 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-93049
git.kernel.org/stable/c/0ce48c6dde... WEB
https://git.kernel.org/stable/c/0ce48c6ddea1a8e675a2eb0221b62a9950788f3c
git.kernel.org/stable/c/37be7bc2c2... WEB
https://git.kernel.org/stable/c/37be7bc2c2d09c18e939da20224405864a0090b9
git.kernel.org/stable/c/5c349c533e... WEB
https://git.kernel.org/stable/c/5c349c533e72af2313c3be0f80a24d7407fa4777
git.kernel.org/stable/c/779aa4c66a... WEB
https://git.kernel.org/stable/c/779aa4c66a96bf43d2d62982ea1a9096a9128d87
git.kernel.org/stable/c/a82d93fcfd... WEB
https://git.kernel.org/stable/c/a82d93fcfdfd26af17049c34319dfdd079cd1901
git.kernel.org/stable/c/d5086911d5... WEB
https://git.kernel.org/stable/c/d5086911d532b82ca070d944aa08ddde00baefe4
git.kernel.org/stable/c/ecadb9137a... WEB
https://git.kernel.org/stable/c/ecadb9137aeaa0615183f8d23eabea2b45c862f1
git.kernel.org/stable/c/eec130fc9f... WEB
https://git.kernel.org/stable/c/eec130fc9ffbbd08a5d5432683122b79aca2a726

Frequently Asked Questions

What is CVE-2026-93049?
CVE-2026-93049 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-2026-93049?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-93049?
CVE-2026-93049 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-93049?
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-vm56-mgvf-744c",
  "modified" : "2026-09-17T18:32:08Z",
  "published" : "2026-09-17T18:32:08Z",
  "aliases" : [ "CVE-2026-93049" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: mtdswap: Avoid freeing registered blktrans device twice\n\nIn mtdswap_add_mtd(), debugfs setup failure after successful blktrans\nregistration can free mbd_dev twice.\n\nadd_mtd_blktrans_dev() initializes the blktrans device reference and\npublishes the disk. Once that succeeds, del_mtd_blktrans_dev() tears the\ndisk down and drops the blktrans reference; when that reference reaches\nzero, blktrans_dev_release() frees the mtd_blktrans_dev.\n\nThe debugfs failure path called del_mtd_blktrans_dev(mbd_dev), then fell\nthrough the common cleanup label and called kfree(mbd_dev) again. Clear\nthe local pointer after deregistration so the common cleanup can still\nrelease the mtdswap state without freeing the blktrans object twice.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-93049"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0ce48c6ddea1a8e675a2eb0221b62a9950788f3c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/37be7bc2c2d09c18e939da20224405864a0090b9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5c349c533e72af2313c3be0f80a24d7407fa4777"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/779aa4c66a96bf43d2d62982ea1a9096a9128d87"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a82d93fcfdfd26af17049c34319dfdd079cd1901"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d5086911d532b82ca070d944aa08ddde00baefe4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ecadb9137aeaa0615183f8d23eabea2b45c862f1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eec130fc9ffbbd08a5d5432683122b79aca2a726"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:58Z"
  }
}