CVE-2026-98590: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-6ffg-3w9m-mjpv
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Advisory Summary

CVE-2026-98590 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-2026-98590 at a Glance

CVE Identifier CVE-2026-98590
GHSA Identifier GHSA-6ffg-3w9m-mjpv
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-2026-98590

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-2026-98590, 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 bpf_sock context code generation Currently, the ctx access code reads the rx_queue_mapping field with either a 4-byte or 2-byte load. The rest of the bits in the register are marked known zero by the verifier. However, the emitted ctx access code places in the register on certain the special value (-1) using BPF_MOV_IMM64, which gets sign-extended to turn on all the bits in the register. By shifting this value right, the program ends up with a value at runtime above what the verifier assumes is possible. Fix this by ensuring the read value is as wide as the assumed size. Use MOV32 instructions instead of MOV64 instructions to keep the upper bits zero as assumed by the verifier. Also properly report the size of the destination variable (the bpf_sock field, 4 bytes) instead of the source (the socket field, 2 bytes).

References

git.kernel.org/stable/c/d95dd5a6c6... WEB
https://git.kernel.org/stable/c/d95dd5a6c6cd08d5ae466d3aed27b3cf59155a6c
git.kernel.org/stable/c/e3ddcf4aeb... WEB
https://git.kernel.org/stable/c/e3ddcf4aeb342d4de2e5761c7042270d454752de
git.kernel.org/stable/c/ea4dc96c90... WEB
https://git.kernel.org/stable/c/ea4dc96c902ccfa49dd3e4f23c443dab4a74b018
NVD — CVE-2026-98590 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98590
git.kernel.org/stable/c/4a41d064fa... WEB
https://git.kernel.org/stable/c/4a41d064facc3330e176ecbbf5b0026ed18a5c69
git.kernel.org/stable/c/4a4852376e... WEB
https://git.kernel.org/stable/c/4a4852376e3a2727ea40e61143d6d7c22bb6dfad
git.kernel.org/stable/c/70288599d1... WEB
https://git.kernel.org/stable/c/70288599d1754e157df8326239316dbdf08ea33c
git.kernel.org/stable/c/84ebb991ae... WEB
https://git.kernel.org/stable/c/84ebb991ae985149079ae9ab51b7e3ba25a9ff53
git.kernel.org/stable/c/b3f37afc7f... WEB
https://git.kernel.org/stable/c/b3f37afc7fd7c52bc2114310aff1eb24c7cd4d73

Frequently Asked Questions

What is CVE-2026-98590?
CVE-2026-98590 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-2026-98590?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98590?
CVE-2026-98590 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98590?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-6ffg-3w9m-mjpv",
  "modified" : "2026-10-18T18:31:55Z",
  "published" : "2026-10-18T18:31:55Z",
  "aliases" : [ "CVE-2026-98590" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix bpf_sock context code generation\n\nCurrently, the ctx access code reads the rx_queue_mapping\nfield with either a 4-byte or 2-byte load. The rest of the bits\nin the register are marked known zero by the verifier. However,\nthe emitted ctx access code places in the register on certain\nthe special value (-1) using BPF_MOV_IMM64, which gets sign-extended\nto turn on all the bits in the register. By shifting this value right,\nthe program ends up with a value at runtime above what the verifier\nassumes is possible.\n\nFix this by ensuring the read value is as wide as the assumed size.\nUse MOV32 instructions instead of MOV64 instructions to keep\nthe upper bits zero as assumed by the verifier. Also properly report\nthe size of the destination variable (the bpf_sock field, 4 bytes) instead\nof the source (the socket field, 2 bytes).",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98590"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4a41d064facc3330e176ecbbf5b0026ed18a5c69"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4a4852376e3a2727ea40e61143d6d7c22bb6dfad"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/70288599d1754e157df8326239316dbdf08ea33c"
  }, {
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  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:11Z"
  }
}