CVE-2026-89836: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-xprx-r7x7-gvjr
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89836 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89836 at a Glance

CVE Identifier CVE-2026-89836
GHSA Identifier GHSA-xprx-r7x7-gvjr
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
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:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
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-2026-89836

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-2026-89836, 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 folio_nr_pages() race after put in large folio invalidate Our v6.18 based Android system is continuely suffering livelock and bad page stat as shown in[1] which related to broken xarray slot status. By investigating big folio operations within f2fs, we find below races and fix it by get the nr_pages before drop the refcount and folio_lock. f2fs_get_read_data_folio() calls f2fs_folio_put() before folio_nr_pages() when invalidating a large folio from the page cache. That unlocks the folio and drops the caller reference, leaving a window where a concurrent truncate or folio split can shrink the compound folio or free it before the invalidate range is computed. An undersized range then leaves split sub-folios in mapping->i_pages, which can later interact badly with truncate and reclaim (stale xarray entries and bad page state when folio->mapping no longer matches the mapping being truncated). [1] PID: 2594 TASK: ffffff8169b81580 CPU: 7 COMMAND: "Thread-3" #0 [ffffffc08ef2b8a0] xas_load at ffffffe52d1f42a4 #1 [ffffffc08ef2b900] find_get_entries at ffffffe52c185798 #2 [ffffffc08ef2bb60] truncate_inode_pages_range at ffffffe52c19e83c #3 [ffffffc08ef2bbc0] truncate_inode_pages_final at ffffffe52c19ec2c #4 [ffffffc08ef2bc20] f2fs_evict_inode at ffffffe52c4c8400 #5 [ffffffc08ef2bcc0] evict at ffffffe52c2de9f4 #6 [ffffffc08ef2bd00] iput at ffffffe52c2db1b4 #7 [ffffffc08ef2bd30] dentry_unlink_inode at ffffffe52c2d7204 #8 [ffffffc08ef2bd50] __dentry_kill at ffffffe52c2d3dcc #9 [ffffffc08ef2bd80] dput at ffffffe52c2d3c3c #10 [ffffffc08ef2bda0] __fput at ffffffe52c2b0a7c #11 [ffffffc08ef2bde0] ____fput at ffffffe52c2b1034 #12 [ffffffc08ef2bdf0] task_work_run at ffffffe52beea200 #13 [ffffffc08ef2be20] exit_to_user_mode_loop at ffffffe52bfbc17c #14 [ffffffc08ef2be80] el0_svc at ffffffe52d1f8e54 #15 [ffffffc08ef2beb0] el0t_64_sync_handler at ffffffe52d1f8d10

References

NVD — CVE-2026-89836 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89836
git.kernel.org/stable/c/0dab71381f... WEB
https://git.kernel.org/stable/c/0dab71381f1b4d12dc2056f8bd5aaa9d93ce9082
git.kernel.org/stable/c/cc34df18da... WEB
https://git.kernel.org/stable/c/cc34df18da92f68f9b384c3ae95ad64be46cb5ee

Frequently Asked Questions

What is CVE-2026-89836?
CVE-2026-89836 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-2026-89836?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89836?
CVE-2026-89836 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89836?
CVE-2026-89836 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89836?
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-xprx-r7x7-gvjr",
  "modified" : "2026-09-16T15:30:58Z",
  "published" : "2026-09-16T12:30:38Z",
  "aliases" : [ "CVE-2026-89836" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix folio_nr_pages() race after put in large folio invalidate\n\nOur v6.18 based Android system is continuely suffering livelock and bad\npage stat as shown in[1] which related to broken xarray slot status. By\ninvestigating big folio operations within f2fs, we find below races and\nfix it by get the nr_pages before drop the refcount and folio_lock.\n\nf2fs_get_read_data_folio() calls f2fs_folio_put() before\nfolio_nr_pages() when invalidating a large folio from the page cache.\nThat unlocks the folio and drops the caller reference, leaving a window\nwhere a concurrent truncate or folio split can shrink the compound folio\nor free it before the invalidate range is computed. An undersized range\nthen leaves split sub-folios in mapping->i_pages, which can later\ninteract badly with truncate and reclaim (stale xarray entries and bad\npage state when folio->mapping no longer matches the mapping being\ntruncated).\n\n[1]\nPID: 2594     TASK: ffffff8169b81580  CPU: 7    COMMAND: \"Thread-3\"\n #0 [ffffffc08ef2b8a0] xas_load at ffffffe52d1f42a4\n #1 [ffffffc08ef2b900] find_get_entries at ffffffe52c185798\n #2 [ffffffc08ef2bb60] truncate_inode_pages_range at ffffffe52c19e83c\n #3 [ffffffc08ef2bbc0] truncate_inode_pages_final at ffffffe52c19ec2c\n #4 [ffffffc08ef2bc20] f2fs_evict_inode at ffffffe52c4c8400\n #5 [ffffffc08ef2bcc0] evict at ffffffe52c2de9f4\n #6 [ffffffc08ef2bd00] iput at ffffffe52c2db1b4\n #7 [ffffffc08ef2bd30] dentry_unlink_inode at ffffffe52c2d7204\n #8 [ffffffc08ef2bd50] __dentry_kill at ffffffe52c2d3dcc\n #9 [ffffffc08ef2bd80] dput at ffffffe52c2d3c3c\n #10 [ffffffc08ef2bda0] __fput at ffffffe52c2b0a7c\n #11 [ffffffc08ef2bde0] ____fput at ffffffe52c2b1034\n #12 [ffffffc08ef2bdf0] task_work_run at ffffffe52beea200\n #13 [ffffffc08ef2be20] exit_to_user_mode_loop at ffffffe52bfbc17c\n #14 [ffffffc08ef2be80] el0_svc at ffffffe52d1f8e54\n #15 [ffffffc08ef2beb0] el0t_64_sync_handler at ffffffe52d1f8d10",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/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-2026-89836"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0dab71381f1b4d12dc2056f8bd5aaa9d93ce9082"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cc34df18da92f68f9b384c3ae95ad64be46cb5ee"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:50Z"
  }
}