CVE-2026-68240: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-hg58-rvxm-hmcv
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CVSS 8.8
CWE-401
Published
Advisory Summary

CVE-2026-68240 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-401: Missing Release of Memory after Effective Lifetime) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68240 at a Glance

CVE Identifier CVE-2026-68240
GHSA Identifier GHSA-hg58-rvxm-hmcv
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-401: Missing Release of Memory after Effective Lifetime
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-68240

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-2026-68240, 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 CWE-401: Missing Release of Memory after Effective Lifetime, where the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. 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: drm/gpusvm: publish dpagemap early to avoid device mapping leak on error drm_gpusvm_get_pages() only stored the local dpagemap into svm_pages->dpagemap on the success path. If a later page failed (e.g. -EOPNOTSUPP when ctx->allow_mixed is false) and jumped to err_unmap, svm_pages->dpagemap was still NULL, so __drm_gpusvm_unmap_pages() skipped device_unmap() and leaked the device mappings already created. Assign svm_pages->dpagemap when the first device page is mapped so the err_unmap path can device_unmap() those mappings. This issue was found by Sashiko AI review.

References

NVD — CVE-2026-68240 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68240
git.kernel.org/stable/c/72e4fca552... WEB
https://git.kernel.org/stable/c/72e4fca5529e45b5beebad79d804de442f632324
git.kernel.org/stable/c/7f708f51e3... WEB
https://git.kernel.org/stable/c/7f708f51e3955bda0d77a0b67ab9bea6c97fea99
git.kernel.org/stable/c/e8362523fd... WEB
https://git.kernel.org/stable/c/e8362523fd1b61712f7d996802f9b5dee545c7e6

Frequently Asked Questions

What is CVE-2026-68240?
CVE-2026-68240 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-401: Missing Release of Memory after Effective Lifetime.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-68240?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68240?
CVE-2026-68240 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-68240?
CVE-2026-68240 is classified under CWE-401: Missing Release of Memory after Effective Lifetime (The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.).
How can I check Maven dependencies for CVE-2026-68240?
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-hg58-rvxm-hmcv",
  "modified" : "2026-08-14T00:31:53Z",
  "published" : "2026-08-10T15:33:42Z",
  "aliases" : [ "CVE-2026-68240" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gpusvm: publish dpagemap early to avoid device mapping leak on error\n\ndrm_gpusvm_get_pages() only stored the local dpagemap into\nsvm_pages->dpagemap on the success path. If a later page failed (e.g.\n-EOPNOTSUPP when ctx->allow_mixed is false) and jumped to err_unmap,\nsvm_pages->dpagemap was still NULL, so __drm_gpusvm_unmap_pages() skipped\ndevice_unmap() and leaked the device mappings already created.\n\nAssign svm_pages->dpagemap when the first device page is mapped so the\nerr_unmap path can device_unmap() those mappings.\n\nThis issue was found by Sashiko AI review.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68240"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/72e4fca5529e45b5beebad79d804de442f632324"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7f708f51e3955bda0d77a0b67ab9bea6c97fea99"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e8362523fd1b61712f7d996802f9b5dee545c7e6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:12Z"
  }
}