CVE-2026-89529: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-4fgg-mw2q-x784
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Advisory Summary

CVE-2026-89529 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-2026-89529 at a Glance

CVE Identifier CVE-2026-89529
GHSA Identifier GHSA-4fgg-mw2q-x784
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-2026-89529

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-2026-89529, 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: svcrdma: Reject oversized Read segments at decode time The RPC/RDMA Read list decoder stores wire-supplied segment lengths without validation. xdr_count_read_segments() checks 4-byte alignment for non-zero position values but does not cap the segment length. An oversized rs_length reaches svc_rdma_build_read_segment(), which derives nr_bvec from it and can drive a large dynamic bvec allocation before verifying that enough rq_pages remain. If the post-allocation page-overrun guard fires, the freshly acquired rw context is not returned, leaking the resource. Reject any segment whose length exceeds the receive context's page budget during Read list decoding, consistent with how xdr_check_write_chunk() bounds Write segment counts against rc_maxpages. Also return the rw context on the existing post-allocation overrun path in svc_rdma_build_read_segment(), keeping that defensive guard balanced.

References

NVD — CVE-2026-89529 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89529
git.kernel.org/stable/c/5120fe54e0... WEB
https://git.kernel.org/stable/c/5120fe54e0e2f5b62797a432115cc61d61117a5b
git.kernel.org/stable/c/af6f0e06be... WEB
https://git.kernel.org/stable/c/af6f0e06bed818ee7fc8b869915964410020a1c5

Frequently Asked Questions

What is CVE-2026-89529?
CVE-2026-89529 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-2026-89529?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-89529?
CVE-2026-89529 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89529?
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-4fgg-mw2q-x784",
  "modified" : "2026-09-11T21:31:30Z",
  "published" : "2026-09-11T21:31:30Z",
  "aliases" : [ "CVE-2026-89529" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Reject oversized Read segments at decode time\n\nThe RPC/RDMA Read list decoder stores wire-supplied segment\nlengths without validation. xdr_count_read_segments() checks\n4-byte alignment for non-zero position values but does not\ncap the segment length.\n\nAn oversized rs_length reaches svc_rdma_build_read_segment(),\nwhich derives nr_bvec from it and can drive a large dynamic\nbvec allocation before verifying that enough rq_pages remain.\nIf the post-allocation page-overrun guard fires, the freshly\nacquired rw context is not returned, leaking the resource.\n\nReject any segment whose length exceeds the receive context's\npage budget during Read list decoding, consistent with how\nxdr_check_write_chunk() bounds Write segment counts against\nrc_maxpages. Also return the rw context on the existing\npost-allocation overrun path in svc_rdma_build_read_segment(),\nkeeping that defensive guard balanced.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89529"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5120fe54e0e2f5b62797a432115cc61d61117a5b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/af6f0e06bed818ee7fc8b869915964410020a1c5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:35Z"
  }
}