CVE-2026-80638: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-pf3v-qrvc-chw5
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CVSS 8.8
Published
Advisory Summary

CVE-2026-80638 is a HIGH (CVSS 8.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80638 at a Glance

CVE Identifier CVE-2026-80638
GHSA Identifier GHSA-pf3v-qrvc-chw5
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification General Security Weakness
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2026-80638

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-2026-80638, 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: ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent [BUG] Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. [CAUSE] When the last leaf block is removed from a refcount tree, ocfs2_remove_refcount_extent() converts the root back to leaf mode with a bulk memset on &rb->rf_records. rf_records sits in an anonymous union with rf_list. rf_list.l_tree_depth aliases rf_records.rl_count, and is 0 for a single-level tree. With rl_count equal to 0, the memset writes past the 16-byte declared size of rf_records, which the fortify checker catches. [FIX] Replace the bulk memset on &rb->rf_records with a correctly-bounded memset on rl_recs[] alone, after setting rl_count to the correct value.

References

NVD — CVE-2026-80638 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80638
git.kernel.org/stable/c/1ec3cca2d8... WEB
https://git.kernel.org/stable/c/1ec3cca2d8b6b9ff6584ca626d4c8918bbf48d44
git.kernel.org/stable/c/f5255516ec... WEB
https://git.kernel.org/stable/c/f5255516ec7add3a6d5d37853ad5a9a9ddb14305

Frequently Asked Questions

What is CVE-2026-80638?
CVE-2026-80638 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-2026-80638?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80638?
CVE-2026-80638 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-80638?
CVE-2026-80638 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80638?
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-pf3v-qrvc-chw5",
  "modified" : "2026-08-29T09:30:26Z",
  "published" : "2026-08-28T09:31:47Z",
  "aliases" : [ "CVE-2026-80638" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent\n\n[BUG]\nUnlinking a refcounted file whose refcount tree has leaf blocks\ntriggers a fortify panic due to an out-of-bounds write.\n\n[CAUSE]\nWhen the last leaf block is removed from a refcount tree,\nocfs2_remove_refcount_extent() converts the root back to leaf mode\nwith a bulk memset on &rb->rf_records. rf_records sits in an anonymous\nunion with rf_list. rf_list.l_tree_depth aliases rf_records.rl_count,\nand is 0 for a single-level tree. With rl_count equal to 0, the memset\nwrites past the 16-byte declared size of rf_records, which the fortify\nchecker catches.\n\n[FIX]\nReplace the bulk memset on &rb->rf_records with a correctly-bounded\nmemset on rl_recs[] alone, after setting rl_count to the correct value.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80638"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1ec3cca2d8b6b9ff6584ca626d4c8918bbf48d44"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f5255516ec7add3a6d5d37853ad5a9a9ddb14305"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-28T08:16:48Z"
  }
}