CVE-2026-64532: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-4mf8-7864-ff29
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CVSS 7.8
CWE-787
Published
Advisory Summary

CVE-2026-64532 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product writes data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64532 at a Glance

CVE Identifier CVE-2026-64532
GHSA Identifier GHSA-4mf8-7864-ff29
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

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

How to Fix CVE-2026-64532

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-2026-64532, 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-787: Out-of-bounds Write, where the product writes 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: fs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,Allocation} In do_action()'s UpdateRecordDataRoot (fslog.c:3489) and UpdateRecordDataAllocation (fslog.c:3697) cases, the memmove destination is `Add2Ptr(e, le16_to_cpu(e->view.data_off))`, where e->view.data_off comes from an on-disk NTFS_DE inside an INDEX_ROOT or INDEX_BUFFER. Neither case validates view.data_off + dlen against e->size; the existing check_if_index_root / check_if_alloc_index helpers walk the entry chain and validate the entry's offset, but not its internal view fields. The neighbouring read sites (e.g., fs/ntfs3/index.c when iterating view entries) check view.data_off + view.data_size <= e->size. Apply the same bound at the two memmove sites. Reproduced under UML+KASAN on mainline 8d90b09e6741 via pr_warn-only probe instrumentation: with view.data_off forced to 0xFFFC, the memmove writes 32 bytes past the end of the NTFS_DE. This is similar in shape to Pavitra Jha's 2026-05-02 patch "fs/ntfs3: prevent oob in case UpdateRecordDataRoot" (<20260502105008.21827-1-jhapavitra98@gmail.com>) which proposes calling ntfs3_bad_de_range(); that helper does not exist in mainline. This patch uses inline checks.

References

NVD — CVE-2026-64532 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64532
git.kernel.org/stable/c/315d3a9a48... WEB
https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd
git.kernel.org/stable/c/36feda687a... WEB
https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411
git.kernel.org/stable/c/3e127829e5... WEB
https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a
git.kernel.org/stable/c/429d653ca6... WEB
https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d
git.kernel.org/stable/c/b20e5a709d... WEB
https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1
git.kernel.org/stable/c/be306b8d91... WEB
https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448
git.kernel.org/stable/c/d41b382068... WEB
https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac

Frequently Asked Questions

What is CVE-2026-64532?
CVE-2026-64532 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-787: Out-of-bounds Write.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64532?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64532?
CVE-2026-64532 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-64532?
CVE-2026-64532 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-64532?
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-4mf8-7864-ff29",
  "modified" : "2026-07-30T06:32:32Z",
  "published" : "2026-07-27T09:31:26Z",
  "aliases" : [ "CVE-2026-64532" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,Allocation}\n\nIn do_action()'s UpdateRecordDataRoot (fslog.c:3489) and\nUpdateRecordDataAllocation (fslog.c:3697) cases, the memmove\ndestination is `Add2Ptr(e, le16_to_cpu(e->view.data_off))`,\nwhere e->view.data_off comes from an on-disk NTFS_DE inside\nan INDEX_ROOT or INDEX_BUFFER.  Neither case validates\nview.data_off + dlen against e->size; the existing\ncheck_if_index_root / check_if_alloc_index helpers walk the\nentry chain and validate the entry's offset, but not its\ninternal view fields.\n\nThe neighbouring read sites (e.g., fs/ntfs3/index.c when\niterating view entries) check view.data_off + view.data_size\n<= e->size.  Apply the same bound at the two memmove sites.\n\nReproduced under UML+KASAN on mainline 8d90b09e6741 via\npr_warn-only probe instrumentation: with view.data_off forced\nto 0xFFFC, the memmove writes 32 bytes past the end of the\nNTFS_DE.\n\nThis is similar in shape to Pavitra Jha's 2026-05-02 patch\n\"fs/ntfs3: prevent oob in case UpdateRecordDataRoot\"\n(<20260502105008.21827-1-jhapavitra98@gmail.com>) which\nproposes calling ntfs3_bad_de_range(); that helper does not\nexist in mainline.  This patch uses inline checks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64532"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-27T08:16:22Z"
  }
}