CVE-2026-63820: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-m33g-hj44-mvvf
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Advisory Summary

CVE-2026-63820 is a security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-63820 at a Glance

CVE Identifier CVE-2026-63820
GHSA Identifier GHSA-m33g-hj44-mvvf
Severity N/A
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-63820

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-2026-63820, 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: f2fs: fix missing read bio submission on large folio error f2fs_read_data_large_folio() can keep a read bio across multiple readahead folios. If a later folio hits an error before any of its blocks are added to the bio, folio_in_bio is false and the current error path returns immediately after ending that folio. This can leave the bio accumulated for earlier folios unsubmitted. Those folios then never receive read completion, and readers can wait indefinitely on the locked folios. Route errors through the common out path so any pending bio is submitted before returning. Stop consuming more readahead folios once an error is seen, and only wait on and clear the current folio when it was actually added to the bio.

References

NVD — CVE-2026-63820 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63820
git.kernel.org/stable/c/48c92559e7... WEB
https://git.kernel.org/stable/c/48c92559e7b66fdc3cbc74f6e152e66ec0150a0a
git.kernel.org/stable/c/74c8d2ec95... WEB
https://git.kernel.org/stable/c/74c8d2ec95c59a5651ecd975c466998af1961fd4

Frequently Asked Questions

What is CVE-2026-63820?
CVE-2026-63820 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-2026-63820?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-63820?
CVE-2026-63820 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-63820?
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-m33g-hj44-mvvf",
  "modified" : "2026-07-19T12:30:23Z",
  "published" : "2026-07-19T12:30:23Z",
  "aliases" : [ "CVE-2026-63820" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix missing read bio submission on large folio error\n\nf2fs_read_data_large_folio() can keep a read bio across multiple\nreadahead folios.  If a later folio hits an error before any of its\nblocks are added to the bio, folio_in_bio is false and the current error\npath returns immediately after ending that folio.\n\nThis can leave the bio accumulated for earlier folios unsubmitted.  Those\nfolios then never receive read completion, and readers can wait\nindefinitely on the locked folios.\n\nRoute errors through the common out path so any pending bio is submitted\nbefore returning.  Stop consuming more readahead folios once an error is\nseen, and only wait on and clear the current folio when it was actually\nadded to the bio.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-63820"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/48c92559e7b66fdc3cbc74f6e152e66ec0150a0a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/74c8d2ec95c59a5651ecd975c466998af1961fd4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T12:16:55Z"
  }
}