CVE-2026-98558: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-prw3-7248-3734
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Advisory Summary

CVE-2026-98558 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-2026-98558 at a Glance

CVE Identifier CVE-2026-98558
GHSA Identifier GHSA-prw3-7248-3734
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-2026-98558

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-2026-98558, 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: net: flush skb_defer_nodes in dev_cpu_dead() When a CPU goes offline, dev_cpu_dead() drains its softnet queues (completion_queue, output_queue, poll_list, process_queue, and input_pkt_queue), but leaves net_hotdata.skb_defer_nodes untouched. If oldcpu goes offline while holding pending skbs in its skb_defer_nodes lists (e.g. below the sysctl_skb_defer_max >> 1 IPI threshold, or if the IPI races with CPU teardown), those skbs remain stranded until oldcpu is brought back online. If any of these skbs hold page_pool fragments, page_pool_destroy() will stall indefinitely waiting for inflight pages to be returned when a netdev or driver is torn down while oldcpu is offline. Additionally, if smp_call_function_single_async() fails in kick_defer_list_purge() because the target CPU went offline, reset defer_ipi_scheduled to 0 so future IPI kicks are not blocked when the CPU comes back online. Also, if oldcpu was the last online CPU on its NUMA node, drain that node's slot across all CPUs so no skbs deferred from that node remain stranded on idle remote CPUs (or if the node itself is subsequently offlined). Finally, in skb_attempt_defer_free(), re-check cpu_online(cpu) and whether the caller migrated CPUs after llist_add(), flushing the node list if so, to close the preemption TOCTOU race against CPU/node teardown.

References

NVD — CVE-2026-98558 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98558
git.kernel.org/stable/c/06e3f54e8b... WEB
https://git.kernel.org/stable/c/06e3f54e8b22040ada01a28343badf1990b4dd7d
git.kernel.org/stable/c/c68f415746... WEB
https://git.kernel.org/stable/c/c68f4157463448a76893223e117170be8374d773

Frequently Asked Questions

What is CVE-2026-98558?
CVE-2026-98558 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-2026-98558?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98558?
CVE-2026-98558 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98558?
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-prw3-7248-3734",
  "modified" : "2026-10-18T18:31:54Z",
  "published" : "2026-10-18T18:31:54Z",
  "aliases" : [ "CVE-2026-98558" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: flush skb_defer_nodes in dev_cpu_dead()\n\nWhen a CPU goes offline, dev_cpu_dead() drains its softnet queues\n(completion_queue, output_queue, poll_list, process_queue, and\ninput_pkt_queue), but leaves net_hotdata.skb_defer_nodes untouched.\n\nIf oldcpu goes offline while holding pending skbs in its\nskb_defer_nodes lists (e.g. below the sysctl_skb_defer_max >> 1 IPI\nthreshold, or if the IPI races with CPU teardown), those skbs remain\nstranded until oldcpu is brought back online. If any of these skbs\nhold page_pool fragments, page_pool_destroy() will stall indefinitely\nwaiting for inflight pages to be returned when a netdev or driver is\ntorn down while oldcpu is offline.\n\nAdditionally, if smp_call_function_single_async() fails in\nkick_defer_list_purge() because the target CPU went offline, reset\ndefer_ipi_scheduled to 0 so future IPI kicks are not blocked when the\nCPU comes back online.\n\nAlso, if oldcpu was the last online CPU on its NUMA node, drain that\nnode's slot across all CPUs so no skbs deferred from that node remain\nstranded on idle remote CPUs (or if the node itself is subsequently\nofflined).\n\nFinally, in skb_attempt_defer_free(), re-check cpu_online(cpu) and\nwhether the caller migrated CPUs after llist_add(), flushing the node\nlist if so, to close the preemption TOCTOU race against CPU/node\nteardown.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98558"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/06e3f54e8b22040ada01a28343badf1990b4dd7d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c68f4157463448a76893223e117170be8374d773"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:07Z"
  }
}