CVE-2026-98484: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-j4h7-w628-h5g3
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Advisory Summary

CVE-2026-98484 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-2026-98484 at a Glance

CVE Identifier CVE-2026-98484
GHSA Identifier GHSA-j4h7-w628-h5g3
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-2026-98484

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-2026-98484, 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: netfilter: nf_tables: skip expired catchall elements on insert and delete nft_setelem_catchall_insert() looks up duplicates with nft_set_elem_active() only, while nft_set_catchall_lookup() and the dump path additionally skip expired elements. Once a catchall element with a timeout expires, this predicate drift makes it invisible to userspace dumps, yet it still blocks re-insertion: with NLM_F_EXCL the request fails with -EEXIST, and without it the request reports success but silently inserts nothing. The stale entry only goes away when the (user-tunable) gc interval elapses, so the catchall rule may silently stop matching for an arbitrarily long time after its first expiration. The delete path shows the same drift: nft_setelem_catchall_deactivate() picks the first active-next entry in the catchall list, so with an expired entry still pending GC it retires the stale entry instead of the fresh one, and it deactivates an element that userspace no longer sees instead of failing with -ENOENT. Align both walks with the lookup and dump predicates: only an element that is active and not expired counts as a duplicate or delete candidate, using the per-netns timestamp taken at transaction start, in line with the set backend .insert/.deactivate and catchall GC sync paths.

References

NVD — CVE-2026-98484 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98484
git.kernel.org/stable/c/12cf803edf... WEB
https://git.kernel.org/stable/c/12cf803edfffef96f6415f0b5dbc7ec88842ea0f
git.kernel.org/stable/c/2f07da3881... WEB
https://git.kernel.org/stable/c/2f07da3881525f7cbfed1ced2796c71a201505b9
git.kernel.org/stable/c/4fb8b1ccc4... WEB
https://git.kernel.org/stable/c/4fb8b1ccc475651e480e509de126bb9ce7f3cff9
git.kernel.org/stable/c/70194dc376... WEB
https://git.kernel.org/stable/c/70194dc37670bd08e44b471389861cc01bd3a3c9

Frequently Asked Questions

What is CVE-2026-98484?
CVE-2026-98484 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-2026-98484?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98484?
CVE-2026-98484 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98484?
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-j4h7-w628-h5g3",
  "modified" : "2026-10-18T18:31:50Z",
  "published" : "2026-10-18T18:31:50Z",
  "aliases" : [ "CVE-2026-98484" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: skip expired catchall elements on insert and delete\n\nnft_setelem_catchall_insert() looks up duplicates with\nnft_set_elem_active() only, while nft_set_catchall_lookup() and the\ndump path additionally skip expired elements.\n\nOnce a catchall element with a timeout expires, this predicate drift\nmakes it invisible to userspace dumps, yet it still blocks\nre-insertion: with NLM_F_EXCL the request fails with -EEXIST, and\nwithout it the request reports success but silently inserts nothing.\nThe stale entry only goes away when the (user-tunable) gc interval\nelapses, so the catchall rule may silently stop matching for an\narbitrarily long time after its first expiration.\n\nThe delete path shows the same drift: nft_setelem_catchall_deactivate()\npicks the first active-next entry in the catchall list, so with an\nexpired entry still pending GC it retires the stale entry instead of\nthe fresh one, and it deactivates an element that userspace no longer\nsees instead of failing with -ENOENT.\n\nAlign both walks with the lookup and dump predicates: only an element\nthat is active and not expired counts as a duplicate or delete\ncandidate, using the per-netns timestamp taken at transaction start,\nin line with the set backend .insert/.deactivate and catchall GC sync\npaths.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98484"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/12cf803edfffef96f6415f0b5dbc7ec88842ea0f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2f07da3881525f7cbfed1ced2796c71a201505b9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4fb8b1ccc475651e480e509de126bb9ce7f3cff9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/70194dc37670bd08e44b471389861cc01bd3a3c9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:16:59Z"
  }
}