CVE-2026-89443: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-5hf2-3p4g-qfhr
Share
CVSS 7.1
Published
Advisory Summary

CVE-2026-89443 is a HIGH (CVSS 7.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89443 at a Glance

CVE Identifier CVE-2026-89443
GHSA Identifier GHSA-5hf2-3p4g-qfhr
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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:N/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 None (I:N)
Availability High (A:H)

How to Fix CVE-2026-89443

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-2026-89443, 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: platform/x86: ISST: Validate level in perf mask ioctls isst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the user-provided level as an index into perf_levels[] via _read_pp_level_info() and _read_bf_level_info(), but neither helper validates it first. The adjacent level-info helpers reject levels above max_level before reading the same per-level register block. Add the same bounds checks to the mask helpers, and reject disabled SST-PP levels in isst_if_get_perf_level_mask() to match isst_if_get_perf_level_info(). This prevents out-of-bounds reads from the per-level offset table on invalid ioctl input.

References

NVD — CVE-2026-89443 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89443
git.kernel.org/stable/c/1889a91565... WEB
https://git.kernel.org/stable/c/1889a9156553f0692acd57caf15e877baace1a01
git.kernel.org/stable/c/1a8bab5cee... WEB
https://git.kernel.org/stable/c/1a8bab5ceee1a42a78de12d3d69f67516a20588e
git.kernel.org/stable/c/80e0d353c8... WEB
https://git.kernel.org/stable/c/80e0d353c86a9a168ad6d213f494796294381538
git.kernel.org/stable/c/beb22ebf76... WEB
https://git.kernel.org/stable/c/beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68
git.kernel.org/stable/c/d19385624b... WEB
https://git.kernel.org/stable/c/d19385624bdfb577db9c94bb8879992fd5e17bcd

Frequently Asked Questions

What is CVE-2026-89443?
CVE-2026-89443 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-2026-89443?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89443?
CVE-2026-89443 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-89443?
CVE-2026-89443 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89443?
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-5hf2-3p4g-qfhr",
  "modified" : "2026-09-14T15:32:23Z",
  "published" : "2026-09-11T21:31:25Z",
  "aliases" : [ "CVE-2026-89443" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: ISST: Validate level in perf mask ioctls\n\nisst_if_get_perf_level_mask() and isst_if_get_base_freq_mask() use the\nuser-provided level as an index into perf_levels[] via\n_read_pp_level_info() and _read_bf_level_info(), but neither helper\nvalidates it first.\n\nThe adjacent level-info helpers reject levels above max_level before\nreading the same per-level register block. Add the same bounds checks to\nthe mask helpers, and reject disabled SST-PP levels in\nisst_if_get_perf_level_mask() to match isst_if_get_perf_level_info().\n\nThis prevents out-of-bounds reads from the per-level offset table on\ninvalid ioctl input.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89443"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1889a9156553f0692acd57caf15e877baace1a01"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1a8bab5ceee1a42a78de12d3d69f67516a20588e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/80e0d353c86a9a168ad6d213f494796294381538"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/beb22ebf76c0415f22d2d0c3f1ff0627e7ae4a68"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d19385624bdfb577db9c94bb8879992fd5e17bcd"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:24Z"
  }
}