CVE-2026-72138: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2fp3-4qp4-w8m7
Share
Published
Advisory Summary

CVE-2026-72138 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-2026-72138 at a Glance

CVE Identifier CVE-2026-72138
GHSA Identifier GHSA-2fp3-4qp4-w8m7
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-2026-72138

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-2026-72138, 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: xen/gntdev: fix error handling in ioctl When gntdev_ioctl_map_grant_ref() fails to copy the operation result back to userspace after successfully adding the mapping to the list, the error path returns -EFAULT without releasing the reference acquired by gntdev_alloc_map(). The mapping remains in priv->maps with a refcount of 1, causing a memory leak and a dangling list entry. Additionally, gntdev_add_map() may modify map->index to avoid overlap with existing mappings. Therefore, the index returned to userspace must be obtained after gntdev_add_map() completes. Fix this by holding the mutex across gntdev_add_map(), retrieving the correct index, and copy_to_user(). If copy_to_user() fails, remove the mapping from the list and release the reference while still holding the lock. Fix these issues by properly handling all error cases.

References

NVD — CVE-2026-72138 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72138
git.kernel.org/stable/c/16d3ccdabb... WEB
https://git.kernel.org/stable/c/16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454
git.kernel.org/stable/c/18a693733f... WEB
https://git.kernel.org/stable/c/18a693733f7ad004e1ab0466693121ca70cd95dd
git.kernel.org/stable/c/1dd9cb98fe... WEB
https://git.kernel.org/stable/c/1dd9cb98fe228e017fff9efb33862ff38c741b65
git.kernel.org/stable/c/311011f8cc... WEB
https://git.kernel.org/stable/c/311011f8cc206c5af2877b03e3f627ee1b8fe024
git.kernel.org/stable/c/45ca1afe2f... WEB
https://git.kernel.org/stable/c/45ca1afe2fd14c04e37227e79d3f8455831d8408
git.kernel.org/stable/c/52dc40ef0c... WEB
https://git.kernel.org/stable/c/52dc40ef0cfee6ae89b7524967e73f0ba37906d7
git.kernel.org/stable/c/6883269a32... WEB
https://git.kernel.org/stable/c/6883269a323609f68f6faa903f8f8ff3d191cec8
git.kernel.org/stable/c/6df926130a... WEB
https://git.kernel.org/stable/c/6df926130aee6cab9b5d2e5b7862e49ccac348dc

Frequently Asked Questions

What is CVE-2026-72138?
CVE-2026-72138 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-2026-72138?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-72138?
CVE-2026-72138 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-72138?
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-2fp3-4qp4-w8m7",
  "modified" : "2026-08-15T06:32:13Z",
  "published" : "2026-08-15T06:32:13Z",
  "aliases" : [ "CVE-2026-72138" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/gntdev: fix error handling in ioctl\n\nWhen gntdev_ioctl_map_grant_ref() fails to copy the operation result\nback to userspace after successfully adding the mapping to the list,\nthe error path returns -EFAULT without releasing the reference\nacquired by gntdev_alloc_map(). The mapping remains in priv->maps\nwith a refcount of 1, causing a memory leak and a dangling list\nentry.\n\nAdditionally, gntdev_add_map() may modify map->index to avoid overlap\nwith existing mappings. Therefore, the index returned to userspace\nmust be obtained after gntdev_add_map() completes.\n\nFix this by holding the mutex across gntdev_add_map(), retrieving\nthe correct index, and copy_to_user(). If copy_to_user() fails,\nremove the mapping from the list and release the reference while\nstill holding the lock.\n\n\nFix these issues by properly handling all error cases.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-72138"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/16d3ccdabb8dee9be2cdcd6d3f9a125572ec0454"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/18a693733f7ad004e1ab0466693121ca70cd95dd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1dd9cb98fe228e017fff9efb33862ff38c741b65"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/311011f8cc206c5af2877b03e3f627ee1b8fe024"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/45ca1afe2fd14c04e37227e79d3f8455831d8408"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/52dc40ef0cfee6ae89b7524967e73f0ba37906d7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6883269a323609f68f6faa903f8f8ff3d191cec8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6df926130aee6cab9b5d2e5b7862e49ccac348dc"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:21:31Z"
  }
}