CVE-2026-31629: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cfpg-q83x-6923
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CVSS 8.8
CWE-667
Published
Advisory Summary

CVE-2026-31629 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-667: Improper Locking) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-31629 at a Glance

CVE Identifier CVE-2026-31629
GHSA Identifier GHSA-cfpg-q83x-6923
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-667: Improper Locking
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2026-31629

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-2026-31629, 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-667: Improper Locking, where the product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. 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: nfc: llcp: add missing return after LLCP_CLOSED checks In nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket state is LLCP_CLOSED, the code correctly calls release_sock() and nfc_llcp_sock_put() but fails to return. Execution falls through to the remainder of the function, which calls release_sock() and nfc_llcp_sock_put() again. This results in a double release_sock() and a refcount underflow via double nfc_llcp_sock_put(), leading to a use-after-free. Add the missing return statements after the LLCP_CLOSED branches in both functions to prevent the fall-through.

References

NVD — CVE-2026-31629 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31629
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/0eb1263a3b... WEB
https://git.kernel.org/stable/c/0eb1263a3b8c36418c9ba295c9ab3abed664edbf
git.kernel.org/stable/c/2b5dd46329... WEB
https://git.kernel.org/stable/c/2b5dd4632966c39da6ba74dbc8689b309065e82c
git.kernel.org/stable/c/665315df9c... WEB
https://git.kernel.org/stable/c/665315df9c3486cb213fc44d83cc8bcd47fe0d26
git.kernel.org/stable/c/796e0cac05... WEB
https://git.kernel.org/stable/c/796e0cac058252d0ad34ebe288e6f7979b5fc9b2
git.kernel.org/stable/c/8977fad2b3... WEB
https://git.kernel.org/stable/c/8977fad2b3c6eefd414131168d597c5d1d5e1abf
git.kernel.org/stable/c/9b49e2a4b8... WEB
https://git.kernel.org/stable/c/9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6
git.kernel.org/stable/c/aba4712e8f... WEB
https://git.kernel.org/stable/c/aba4712e8f0381cd5d196534ce2ad082626a5ab6
git.kernel.org/stable/c/b2a2352959... WEB
https://git.kernel.org/stable/c/b2a23529593d011fb433a3d711fc597ed6a6bd2f
git.kernel.org/stable/c/ff3d9e8f72... WEB
https://git.kernel.org/stable/c/ff3d9e8f7244293e303f7b6ef70774291c7c27e9

Frequently Asked Questions

What is CVE-2026-31629?
CVE-2026-31629 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-667: Improper Locking.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-31629?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-31629?
CVE-2026-31629 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-31629?
CVE-2026-31629 is classified under CWE-667: Improper Locking (The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.).
How can I check Maven dependencies for CVE-2026-31629?
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-cfpg-q83x-6923",
  "modified" : "2026-10-15T03:35:42Z",
  "published" : "2026-04-24T15:32:36Z",
  "aliases" : [ "CVE-2026-31629" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: add missing return after LLCP_CLOSED checks\n\nIn nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket\nstate is LLCP_CLOSED, the code correctly calls release_sock() and\nnfc_llcp_sock_put() but fails to return. Execution falls through to\nthe remainder of the function, which calls release_sock() and\nnfc_llcp_sock_put() again. This results in a double release_sock()\nand a refcount underflow via double nfc_llcp_sock_put(), leading to\na use-after-free.\n\nAdd the missing return statements after the LLCP_CLOSED branches\nin both functions to prevent the fall-through.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31629"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0eb1263a3b8c36418c9ba295c9ab3abed664edbf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2b5dd4632966c39da6ba74dbc8689b309065e82c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/665315df9c3486cb213fc44d83cc8bcd47fe0d26"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/796e0cac058252d0ad34ebe288e6f7979b5fc9b2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8977fad2b3c6eefd414131168d597c5d1d5e1abf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aba4712e8f0381cd5d196534ce2ad082626a5ab6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b2a23529593d011fb433a3d711fc597ed6a6bd2f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ff3d9e8f7244293e303f7b6ef70774291c7c27e9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-667" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-24T15:16:42Z"
  }
}