CVE-2025-40348: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-468j-fmh4-69r9
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Advisory Summary

CVE-2025-40348 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-2025-40348 at a Glance

CVE Identifier CVE-2025-40348
GHSA Identifier GHSA-468j-fmh4-69r9
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-2025-40348

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-2025-40348, 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: slab: Avoid race on slab->obj_exts in alloc_slab_obj_exts If two competing threads enter alloc_slab_obj_exts() and one of them fails to allocate the object extension vector, it might override the valid slab->obj_exts allocated by the other thread with OBJEXTS_ALLOC_FAIL. This will cause the thread that lost this race and expects a valid pointer to dereference a NULL pointer later on. Update slab->obj_exts atomically using cmpxchg() to avoid slab->obj_exts overrides by racing threads. Thanks for Vlastimil and Suren's help with debugging.

References

NVD — CVE-2025-40348 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40348
git.kernel.org/stable/c/6ed8bfd24c... WEB
https://git.kernel.org/stable/c/6ed8bfd24ce1cb31742b09a3eb557cd008533eec
git.kernel.org/stable/c/7c34feda6a... WEB
https://git.kernel.org/stable/c/7c34feda6a9a203c9744281f1b6671b7dad2012d
git.kernel.org/stable/c/c7af5300d7... WEB
https://git.kernel.org/stable/c/c7af5300d78460fc5037ddc77113ba3dbfe77dc0

Frequently Asked Questions

What is CVE-2025-40348?
CVE-2025-40348 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-2025-40348?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2025-40348?
CVE-2025-40348 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2025-40348?
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-468j-fmh4-69r9",
  "modified" : "2025-12-16T15:30:42Z",
  "published" : "2025-12-16T15:30:42Z",
  "aliases" : [ "CVE-2025-40348" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nslab: Avoid race on slab->obj_exts in alloc_slab_obj_exts\n\nIf two competing threads enter alloc_slab_obj_exts() and one of them\nfails to allocate the object extension vector, it might override the\nvalid slab->obj_exts allocated by the other thread with\nOBJEXTS_ALLOC_FAIL. This will cause the thread that lost this race and\nexpects a valid pointer to dereference a NULL pointer later on.\n\nUpdate slab->obj_exts atomically using cmpxchg() to avoid\nslab->obj_exts overrides by racing threads.\n\nThanks for Vlastimil and Suren's help with debugging.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-40348"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6ed8bfd24ce1cb31742b09a3eb557cd008533eec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7c34feda6a9a203c9744281f1b6671b7dad2012d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c7af5300d78460fc5037ddc77113ba3dbfe77dc0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2025-12-16T14:15:46Z"
  }
}