CVE-2026-89748: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-r5q3-2xvw-rm37
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89748 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-2026-89748 at a Glance

CVE Identifier CVE-2026-89748
GHSA Identifier GHSA-r5q3-2xvw-rm37
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-2026-89748

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-2026-89748, 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: tracing: Fix retry exhaustion in simple ring buffer reader swap simple_ring_buffer_swap_reader_page() starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement leaves retry at zero, while a failed replacement leaves it at -1. The current !retry test reverses both outcomes. It returns an error after a successful final replacement, leaving the link update complete but the reader bookkeeping unfinished. After a failed final replacement, it falls through and updates the head and reader pointers as though the replacement succeeded, which can corrupt the ring. Treat only a negative counter as exhaustion and return the documented -EBUSY error.

References

NVD — CVE-2026-89748 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89748
git.kernel.org/stable/c/df02489aa3... WEB
https://git.kernel.org/stable/c/df02489aa3aa1834659f0d20c89f7d212047d268
git.kernel.org/stable/c/e0d3aed7b1... WEB
https://git.kernel.org/stable/c/e0d3aed7b12cf37b74c7cc5265073d0263b49cde

Frequently Asked Questions

What is CVE-2026-89748?
CVE-2026-89748 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-2026-89748?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89748?
CVE-2026-89748 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-2026-89748?
CVE-2026-89748 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89748?
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-r5q3-2xvw-rm37",
  "modified" : "2026-09-13T09:32:30Z",
  "published" : "2026-09-11T21:31:39Z",
  "aliases" : [ "CVE-2026-89748" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix retry exhaustion in simple ring buffer reader swap\n\nsimple_ring_buffer_swap_reader_page() starts with retry set to 8 and\npost-decrements it only after a failed link replacement. On the final\nattempt, a successful replacement leaves retry at zero, while a failed\nreplacement leaves it at -1.\n\nThe current !retry test reverses both outcomes. It returns an error after\na successful final replacement, leaving the link update complete but the\nreader bookkeeping unfinished. After a failed final replacement, it\nfalls through and updates the head and reader pointers as though the\nreplacement succeeded, which can corrupt the ring.\n\nTreat only a negative counter as exhaustion and return the documented\n-EBUSY error.",
  "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-2026-89748"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/df02489aa3aa1834659f0d20c89f7d212047d268"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e0d3aed7b12cf37b74c7cc5265073d0263b49cde"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:20:05Z"
  }
}