CVE-2026-90423: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-vg4x-c29w-66xm
Share
CVSS 7.8
Published
Advisory Summary

CVE-2026-90423 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-2026-90423 at a Glance

CVE Identifier CVE-2026-90423
GHSA Identifier GHSA-vg4x-c29w-66xm
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-2026-90423

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-2026-90423, 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: RDMA/rxe: Fix UAF in ODP init error-handling path rxe_odp_mr_init_user() stores &umem_odp->umem in mr->umem before calling rxe_odp_init_pages(). If rxe_odp_init_pages() fails, rxe_odp_mr_init_user() releases umem_odp and returns an error. rxe_reg_user_mr() then unwinds the error through rxe_cleanup(), rxe_mr_cleanup(), ib_umem_release(mr->umem). There is an IS_ERR_OR_NULL(umem) check at the start of ib_umem_release(). But since mr->umem is NOT reset to NULL in the error handling path of rxe_odp_mr_init_user(), the check passes and it reads already-freed fields like umem->is_dmabuf, causing UAF. Fix the UAF by clearing mr->umem after releasing the failed ODP umem so the MR cleanup path does not release it again.

References

NVD — CVE-2026-90423 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90423
git.kernel.org/stable/c/4cfb448705... WEB
https://git.kernel.org/stable/c/4cfb448705da3171d44d9cbe7be53ff03284d532
git.kernel.org/stable/c/51f2c8d2c9... WEB
https://git.kernel.org/stable/c/51f2c8d2c99fc1f452f7113c08a35edcc4bf8732
git.kernel.org/stable/c/5f19331633... WEB
https://git.kernel.org/stable/c/5f1933163327c9f1c8f2a341c6cb551aaf231ff9

Frequently Asked Questions

What is CVE-2026-90423?
CVE-2026-90423 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-2026-90423?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-90423?
CVE-2026-90423 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-2026-90423?
CVE-2026-90423 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90423?
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-vg4x-c29w-66xm",
  "modified" : "2026-09-18T18:31:32Z",
  "published" : "2026-09-17T18:32:04Z",
  "aliases" : [ "CVE-2026-90423" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix UAF in ODP init error-handling path\n\nrxe_odp_mr_init_user() stores &umem_odp->umem in mr->umem before\ncalling rxe_odp_init_pages(). If rxe_odp_init_pages() fails,\nrxe_odp_mr_init_user() releases umem_odp and returns an error.\n\nrxe_reg_user_mr() then unwinds the error through rxe_cleanup(),\nrxe_mr_cleanup(), ib_umem_release(mr->umem). There is an\nIS_ERR_OR_NULL(umem) check at the start of ib_umem_release().\nBut since mr->umem is NOT reset to NULL in the error handling\npath of rxe_odp_mr_init_user(), the check passes and it reads\nalready-freed fields like umem->is_dmabuf, causing UAF.\n\nFix the UAF by clearing mr->umem after releasing the failed\nODP umem so the MR cleanup path does not release it again.",
  "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-2026-90423"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4cfb448705da3171d44d9cbe7be53ff03284d532"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/51f2c8d2c99fc1f452f7113c08a35edcc4bf8732"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5f1933163327c9f1c8f2a341c6cb551aaf231ff9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:46Z"
  }
}