CVE-2026-90393: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-9prj-6xm5-hxjf
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Advisory Summary

CVE-2026-90393 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-2026-90393 at a Glance

CVE Identifier CVE-2026-90393
GHSA Identifier GHSA-9prj-6xm5-hxjf
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-2026-90393

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-2026-90393, 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: bpf: Fix potential UAF in bpf_netns_link_update_prog In bpf_netns_link_update_prog, the checks for old_prog and prog type are currently performed locklessly before acquiring netns_bpf_mutex. This creates a race condition that can lead to a UAF issue. If two threads concurrently execute BPF_LINK_UPDATE on the same netns link, the following execution path can trigger a UAF: CPU0 CPU1 bpf_netns_link_update_prog if (old_prog && old_prog != link->prog) return -EPERM; bpf_netns_link_update_prog if (old_prog && old_prog != link->prog) ... old_prog = xchg(&link->prog, new_prog); bpf_prog_put(old_prog); if (new_prog->type != link->prog->type) <-- trigger UAF Fix this by moving the old_prog and prog->type checks inside the netns_bpf_mutex critical section. Meanwhile, use guard() to simplify lock management and avoid all the goto jumping.

References

NVD — CVE-2026-90393 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90393
git.kernel.org/stable/c/277168cb9d... WEB
https://git.kernel.org/stable/c/277168cb9d153ce8e9c3f9275670e32ae61b41d6
git.kernel.org/stable/c/5c59978363... WEB
https://git.kernel.org/stable/c/5c5997836381010fc5907b36bc17d3b19407e933
git.kernel.org/stable/c/79a66fd997... WEB
https://git.kernel.org/stable/c/79a66fd997d4eecf17302d613194879eb32e0986
git.kernel.org/stable/c/923f559e95... WEB
https://git.kernel.org/stable/c/923f559e95b89b33c7e1793b3d8f7f4ec9b2e4b7
git.kernel.org/stable/c/bda86e9f31... WEB
https://git.kernel.org/stable/c/bda86e9f31b9a296b6e64a51c91dc776fc9f613e
git.kernel.org/stable/c/bdddf3e149... WEB
https://git.kernel.org/stable/c/bdddf3e1493ee973619c154a57071ce67f78598b
git.kernel.org/stable/c/d462b5481d... WEB
https://git.kernel.org/stable/c/d462b5481d77ce7df8a5ff89a699386f00c9214d
git.kernel.org/stable/c/f4ce6803df... WEB
https://git.kernel.org/stable/c/f4ce6803df4095777191d800bebc50219b615ca0

Frequently Asked Questions

What is CVE-2026-90393?
CVE-2026-90393 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-2026-90393?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90393?
CVE-2026-90393 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90393?
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 
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  "id" : "GHSA-9prj-6xm5-hxjf",
  "modified" : "2026-09-17T18:32:04Z",
  "published" : "2026-09-17T18:32:03Z",
  "aliases" : [ "CVE-2026-90393" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix potential UAF in bpf_netns_link_update_prog\n\nIn bpf_netns_link_update_prog, the checks for old_prog and prog type\nare currently performed locklessly before acquiring netns_bpf_mutex.\nThis creates a race condition that can lead to a UAF issue.\n\nIf two threads concurrently execute BPF_LINK_UPDATE on the same netns\nlink, the following execution path can trigger a UAF:\n\nCPU0                                          CPU1\nbpf_netns_link_update_prog\n  if (old_prog && old_prog != link->prog)\n    return -EPERM;\n                                              bpf_netns_link_update_prog\n                                                if (old_prog && old_prog != link->prog)\n                                                ...\n                                                old_prog = xchg(&link->prog, new_prog);\n                                                bpf_prog_put(old_prog);\n  if (new_prog->type != link->prog->type) <-- trigger UAF\n\nFix this by moving the old_prog and prog->type checks inside the\nnetns_bpf_mutex critical section. Meanwhile, use guard() to simplify\nlock management and avoid all the goto jumping.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
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  "database_specific" : {
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    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:38Z"
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}