CVE-2026-64095: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-q65p-8m3g-4fpv
Share
CVSS 7.1
Published
Advisory Summary

CVE-2026-64095 is a HIGH (CVSS 7.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64095 at a Glance

CVE Identifier CVE-2026-64095
GHSA Identifier GHSA-q65p-8m3g-4fpv
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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:N/I:L/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 None (C:N)
Integrity Low (I:L)
Availability High (A:H)

How to Fix CVE-2026-64095

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-2026-64095, 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: batman-adv: bla: avoid double decrement of bla.num_requests The bla.num_requests is increased when no request_sent was in progress. And it is decremented in various places (announcement was received, backbone is purged, periodic work). But the check if the request_sent is actually set to a specific state and the atomic_dec/_inc are not safe because they are not atomic (TOCTOU) and multiple such code portions can run concurrently. At the same time, it is necessary to modify request_sent (state) and bla.num_requests atomically. Otherwise batadv_bla_send_request() might set request_sent to 1 and is interrupted. batadv_handle_announce() can then set request_sent back to 0 and decrement num_requests before batadv_bla_send_request() incremented it. The two operations must therefore be locked. And since state (request_sent) and wait_periods are only accessed inside this lock, they can be converted to simpler datatypes. And to avoid that the bla.num_requests is touched by a parallel running context with a valid backbone_gw reference after batadv_bla_purge_backbone_gw() ran, a third state "stopped" is required to correctly signal that a backbone_gw is in the state of being cleaned up.

References

NVD — CVE-2026-64095 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64095
git.kernel.org/stable/c/1f013bc941... WEB
https://git.kernel.org/stable/c/1f013bc94154f2e78e97d0296175664224c796e0
git.kernel.org/stable/c/45384612f2... WEB
https://git.kernel.org/stable/c/45384612f29692fbf0c770200361a7acff90125c
git.kernel.org/stable/c/461f1e3dfb... WEB
https://git.kernel.org/stable/c/461f1e3dfb888701895b766446c55db2b10db705
git.kernel.org/stable/c/5328b95960... WEB
https://git.kernel.org/stable/c/5328b95960774f2e189f22485616bc7b8eb2f7e3
git.kernel.org/stable/c/65497ad155... WEB
https://git.kernel.org/stable/c/65497ad155a3246df177b5ef662cd6e5a32cb470
git.kernel.org/stable/c/83ab69bd12... WEB
https://git.kernel.org/stable/c/83ab69bd12b80f6ea169c8bea6977701b53a043d
git.kernel.org/stable/c/8ff9c59d1b... WEB
https://git.kernel.org/stable/c/8ff9c59d1b7b48c2596878341a5310f32895d52b
git.kernel.org/stable/c/a9393751ec... WEB
https://git.kernel.org/stable/c/a9393751ecf7e9096f93cb6eed02db4f79125765

Frequently Asked Questions

What is CVE-2026-64095?
CVE-2026-64095 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-2026-64095?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64095?
CVE-2026-64095 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
What CWE is associated with CVE-2026-64095?
CVE-2026-64095 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64095?
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-q65p-8m3g-4fpv",
  "modified" : "2026-07-20T15:31:59Z",
  "published" : "2026-07-19T18:31:51Z",
  "aliases" : [ "CVE-2026-64095" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: avoid double decrement of bla.num_requests\n\nThe bla.num_requests is increased when no request_sent was in progress. And\nit is decremented in various places (announcement was received, backbone is\npurged, periodic work). But the check if the request_sent is actually set\nto a specific state and the atomic_dec/_inc are not safe because they are\nnot atomic (TOCTOU) and multiple such code portions can run concurrently.\n\nAt the same time, it is necessary to modify request_sent (state) and\nbla.num_requests atomically. Otherwise batadv_bla_send_request() might set\nrequest_sent to 1 and is interrupted.  batadv_handle_announce() can then\nset request_sent back to 0 and decrement num_requests before\nbatadv_bla_send_request() incremented it.\n\nThe two operations must therefore be locked. And since state (request_sent)\nand wait_periods are only accessed inside this lock, they can be converted\nto simpler datatypes. And to avoid that the bla.num_requests is touched by\na parallel running context with a valid backbone_gw reference after\nbatadv_bla_purge_backbone_gw() ran, a third state \"stopped\" is required to\ncorrectly signal that a backbone_gw is in the state of being cleaned up.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64095"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1f013bc94154f2e78e97d0296175664224c796e0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/45384612f29692fbf0c770200361a7acff90125c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/461f1e3dfb888701895b766446c55db2b10db705"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5328b95960774f2e189f22485616bc7b8eb2f7e3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/65497ad155a3246df177b5ef662cd6e5a32cb470"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/83ab69bd12b80f6ea169c8bea6977701b53a043d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8ff9c59d1b7b48c2596878341a5310f32895d52b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a9393751ecf7e9096f93cb6eed02db4f79125765"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:50Z"
  }
}