CVE-2026-64223: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-m9jr-3w64-2f4w
Share
CVSS 8.1
CWE-125
Published
Advisory Summary

CVE-2026-64223 is a HIGH (CVSS 8.1) security vulnerability vulnerability (CWE-125: Out-of-bounds Read) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reads data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64223 at a Glance

CVE Identifier CVE-2026-64223
GHSA Identifier GHSA-m9jr-3w64-2f4w
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:H/I:N/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 None (I:N)
Availability High (A:H)

How to Fix CVE-2026-64223

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-2026-64223, 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-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. 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: wifi: mac80211: consume only present negotiated TTLM maps ieee80211_tid_to_link_map_size_ok() validates negotiated TTLM elements against the number of link-map entries indicated by link_map_presence. ieee80211_parse_neg_ttlm() must consume the same layout. The parser advanced its cursor for every TID, including TIDs whose presence bit is clear and therefore have no map bytes in the element. A sparse map can then make a later present TID read past the validated element. The bad bytes land in neg_ttlm->{up,down}link[tid] but are gated by valid_links before being applied to driver state, so a peer cannot turn the read into a policy change. Under KUnit + KASAN with an exact-sized element allocation the OOB read is reported as a slab-out-of-bounds; whether the same trigger fires under the production RX path depends on surrounding allocator state. Advance the cursor only when the current TID has a map present.

References

NVD — CVE-2026-64223 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64223
git.kernel.org/stable/c/2becaaeebe... WEB
https://git.kernel.org/stable/c/2becaaeebe230ade1fcd5d0f1cde4d6ee93ec78f
git.kernel.org/stable/c/2dd9304727... WEB
https://git.kernel.org/stable/c/2dd9304727c7041df0a599595910bdbe02ad03c5
git.kernel.org/stable/c/a6e6ccd5bd... WEB
https://git.kernel.org/stable/c/a6e6ccd5bd07155c2add6c74ce1a5e68ad3b95ea
git.kernel.org/stable/c/f7d395dc50... WEB
https://git.kernel.org/stable/c/f7d395dc5008168ac5b9c1ac2791e59a6078cca1

Frequently Asked Questions

What is CVE-2026-64223?
CVE-2026-64223 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-125: Out-of-bounds Read.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64223?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64223?
CVE-2026-64223 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-64223?
CVE-2026-64223 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-64223?
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-m9jr-3w64-2f4w",
  "modified" : "2026-07-27T06:30:30Z",
  "published" : "2026-07-24T18:31:27Z",
  "aliases" : [ "CVE-2026-64223" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: consume only present negotiated TTLM maps\n\nieee80211_tid_to_link_map_size_ok() validates negotiated TTLM elements\nagainst the number of link-map entries indicated by link_map_presence.\nieee80211_parse_neg_ttlm() must consume the same layout.\n\nThe parser advanced its cursor for every TID, including TIDs whose\npresence bit is clear and therefore have no map bytes in the element.\nA sparse map can then make a later present TID read past the validated\nelement.\n\nThe bad bytes land in neg_ttlm->{up,down}link[tid] but are gated by\nvalid_links before being applied to driver state, so a peer cannot\nturn the read into a policy change.  Under KUnit + KASAN with an\nexact-sized element allocation the OOB read is reported as a\nslab-out-of-bounds; whether the same trigger fires under the\nproduction RX path depends on surrounding allocator state.\n\nAdvance the cursor only when the current TID has a map present.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64223"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2becaaeebe230ade1fcd5d0f1cde4d6ee93ec78f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2dd9304727c7041df0a599595910bdbe02ad03c5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a6e6ccd5bd07155c2add6c74ce1a5e68ad3b95ea"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f7d395dc5008168ac5b9c1ac2791e59a6078cca1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-24T16:16:50Z"
  }
}