CVE-2026-89645: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-m8pq-6746-5gfc
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Advisory Summary

CVE-2026-89645 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-2026-89645 at a Glance

CVE Identifier CVE-2026-89645
GHSA Identifier GHSA-m8pq-6746-5gfc
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-2026-89645

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-2026-89645, 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: btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding a later root fails, or if the first transaction commit fails, btrfs_recover_relocation() jumps to out_unset before merge_reloc_roots() and clean_dirty_subvols(). put_reloc_control() drops the list-owned relocation root references, but it does not clear fs_root->reloc_root or drop the references owned by those pointers. Mount cleanup only drops them when BTRFS_FS_ERROR is set, so an error such as -ENOMEM while processing a later root can leave references behind. Keep temporary references to the fs roots associated during recovery. On failure, clear their reloc_root pointers and drop the corresponding references. Once the first transaction commit succeeds, drop only the temporary fs root references and let the normal merge and cleanup paths handle the relocation roots. Fault injection on a pending-relocation image confirmed the cleanup gap. With an injected first-commit failure, 25 fs roots had reloc_root set with fs_error=0. With this fix, the same failure path drops that count to 0 before mount fails.

References

NVD — CVE-2026-89645 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89645
git.kernel.org/stable/c/2256d6dc5b... WEB
https://git.kernel.org/stable/c/2256d6dc5b88841a8a8b4fd9a9f04730705fb6fd
git.kernel.org/stable/c/4d43107e80... WEB
https://git.kernel.org/stable/c/4d43107e807bcd92621106b07f5011411c6341a8
git.kernel.org/stable/c/6d8ba45729... WEB
https://git.kernel.org/stable/c/6d8ba4572922e336f0b59a80751b018e1e135164
git.kernel.org/stable/c/8a64baeb5b... WEB
https://git.kernel.org/stable/c/8a64baeb5bbb706b83d2235c1e39f5b77183817f

Frequently Asked Questions

What is CVE-2026-89645?
CVE-2026-89645 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-2026-89645?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89645?
CVE-2026-89645 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89645?
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-m8pq-6746-5gfc",
  "modified" : "2026-09-11T21:31:35Z",
  "published" : "2026-09-11T21:31:35Z",
  "aliases" : [ "CVE-2026-89645" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: drop recovered reloc root refs on recovery failure\n\nDuring relocation recovery, each fs root gets a reference to its relocation\nroot. If loading or adding a later root fails, or if the first transaction\ncommit fails, btrfs_recover_relocation() jumps to out_unset before\nmerge_reloc_roots() and clean_dirty_subvols().\n\nput_reloc_control() drops the list-owned relocation root references, but it\ndoes not clear fs_root->reloc_root or drop the references owned by those\npointers. Mount cleanup only drops them when BTRFS_FS_ERROR is set, so an\nerror such as -ENOMEM while processing a later root can leave references\nbehind.\n\nKeep temporary references to the fs roots associated during recovery. On\nfailure, clear their reloc_root pointers and drop the corresponding\nreferences. Once the first transaction commit succeeds, drop only the\ntemporary fs root references and let the normal merge and cleanup paths\nhandle the relocation roots.\n\nFault injection on a pending-relocation image confirmed the cleanup gap.\nWith an injected first-commit failure, 25 fs roots had reloc_root set with\nfs_error=0. With this fix, the same failure path drops that count to 0\nbefore mount fails.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89645"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2256d6dc5b88841a8a8b4fd9a9f04730705fb6fd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4d43107e807bcd92621106b07f5011411c6341a8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6d8ba4572922e336f0b59a80751b018e1e135164"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8a64baeb5bbb706b83d2235c1e39f5b77183817f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:50Z"
  }
}