CVE-2026-98432: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-qp6h-4hvh-qqqc
Share
Published
Advisory Summary

CVE-2026-98432 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-2026-98432 at a Glance

CVE Identifier CVE-2026-98432
GHSA Identifier GHSA-qp6h-4hvh-qqqc
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-2026-98432

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-2026-98432, 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: ipv4: free inet_opt and ireq_opt after an RCU grace period tcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the child socket (newinet->inet_opt) without copying it. Another cpu can concurrently process a retransmitted SYN for the same request socket, and send a SYNACK from tcp_check_req(). tcp_v4_send_synack() and inet_csk_route_req() read ireq->ireq_opt under rcu_read_lock() only, and ip_build_and_send_pkt() and ip_options_build() then read opt->optlen twice. Note that the SYNACK timer itself is not an issue: it holds a reference on its request socket, and inet_csk_reqsk_queue_drop() calls timer_delete_sync() before the child can be freed. Since commit 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table"), request sockets are processed without holding the listener lock, so nothing prevents the child socket from being freed while the SYNACK is still being built. TCP child sockets do not have SOCK_RCU_FREE, and inet_sock_destruct() frees inet_opt with a plain kfree(), leading to a use-after-free in ip_options_build(). A similar issue exists with request socket migration (net.ipv4.tcp_migrate_req=1, or a BPF_SK_REUSEPORT_SELECT_OR_MIGRATE program). reqsk_timer_handler() clones the request socket with inet_reqsk_clone(), so that the old request socket and its clone share the same ireq_opt, then reqsk_migrate_reset() clears the pointer in the old one. Another cpu holding a reference on the old request socket can still be using these options (sending a SYNACK, or creating a child in tcp_v4_syn_recv_sock()) when the clone is freed, and tcp_v4_reqsk_destructor() also uses a plain kfree(). Readers already use RCU, and other paths replacing inet_opt (do_ip_setsockopt(), cipso_v4_sock_setattr()...) already use kfree_rcu(). Use kfree_rcu() in inet_sock_destruct() and tcp_v4_reqsk_destructor() as well. IPv6 is not affected by the first issue, because tcp_v6_syn_recv_sock() duplicates the options. tcp_v6_reqsk_destructor() has the same migration issue with ipv6_opt, which is only set by CALIPSO. This will be addressed in a separate patch.

References

NVD — CVE-2026-98432 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98432
git.kernel.org/stable/c/11a03ce3c4... WEB
https://git.kernel.org/stable/c/11a03ce3c4a62d84c10ccdfe47f8075006498568
git.kernel.org/stable/c/26d4c36d31... WEB
https://git.kernel.org/stable/c/26d4c36d318cffbbd160884a0e4cec0da4da4936
git.kernel.org/stable/c/742f73df54... WEB
https://git.kernel.org/stable/c/742f73df544e03744f2981c467d6542fe8172a2a
git.kernel.org/stable/c/89b5b1eb7d... WEB
https://git.kernel.org/stable/c/89b5b1eb7d633c33832b7ff2c02e19a144705036
git.kernel.org/stable/c/95a8c8fa9f... WEB
https://git.kernel.org/stable/c/95a8c8fa9f27dce64c40c41c062de7728bf34ab5
git.kernel.org/stable/c/a47406c769... WEB
https://git.kernel.org/stable/c/a47406c769f72c070386985488f1c4d057df86b2
git.kernel.org/stable/c/b3b027ef0c... WEB
https://git.kernel.org/stable/c/b3b027ef0cd322bfa839b9aaf5b27551eea54cf6
git.kernel.org/stable/c/e3f33b0a1d... WEB
https://git.kernel.org/stable/c/e3f33b0a1d89d738e2b913dab519226eaf76e15b

Frequently Asked Questions

What is CVE-2026-98432?
CVE-2026-98432 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-2026-98432?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98432?
CVE-2026-98432 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98432?
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-qp6h-4hvh-qqqc",
  "modified" : "2026-10-15T18:32:33Z",
  "published" : "2026-10-15T18:32:33Z",
  "aliases" : [ "CVE-2026-98432" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: free inet_opt and ireq_opt after an RCU grace period\n\ntcp_v4_syn_recv_sock() transfers ownership of ireq->ireq_opt to the\nchild socket (newinet->inet_opt) without copying it.\n\nAnother cpu can concurrently process a retransmitted SYN for the same\nrequest socket, and send a SYNACK from tcp_check_req().\ntcp_v4_send_synack() and inet_csk_route_req() read ireq->ireq_opt\nunder rcu_read_lock() only, and ip_build_and_send_pkt() and\nip_options_build() then read opt->optlen twice.\n\nNote that the SYNACK timer itself is not an issue: it holds a\nreference on its request socket, and inet_csk_reqsk_queue_drop()\ncalls timer_delete_sync() before the child can be freed.\n\nSince commit 079096f103fa (\"tcp/dccp: install syn_recv requests\ninto ehash table\"), request sockets are processed without holding\nthe listener lock, so nothing prevents the child socket from being\nfreed while the SYNACK is still being built. TCP child sockets do\nnot have SOCK_RCU_FREE, and inet_sock_destruct() frees inet_opt\nwith a plain kfree(), leading to a use-after-free in\nip_options_build().\n\nA similar issue exists with request socket migration\n(net.ipv4.tcp_migrate_req=1, or a BPF_SK_REUSEPORT_SELECT_OR_MIGRATE\nprogram). reqsk_timer_handler() clones the request socket with\ninet_reqsk_clone(), so that the old request socket and its clone\nshare the same ireq_opt, then reqsk_migrate_reset() clears the\npointer in the old one. Another cpu holding a reference on the old\nrequest socket can still be using these options (sending a SYNACK,\nor creating a child in tcp_v4_syn_recv_sock()) when the clone is\nfreed, and tcp_v4_reqsk_destructor() also uses a plain kfree().\n\nReaders already use RCU, and other paths replacing inet_opt\n(do_ip_setsockopt(), cipso_v4_sock_setattr()...) already use\nkfree_rcu(). Use kfree_rcu() in inet_sock_destruct() and\ntcp_v4_reqsk_destructor() as well.\n\nIPv6 is not affected by the first issue, because tcp_v6_syn_recv_sock()\nduplicates the options. tcp_v6_reqsk_destructor() has the same\nmigration issue with ipv6_opt, which is only set by CALIPSO. This\nwill be addressed in a separate patch.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98432"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/11a03ce3c4a62d84c10ccdfe47f8075006498568"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/26d4c36d318cffbbd160884a0e4cec0da4da4936"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/742f73df544e03744f2981c467d6542fe8172a2a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/89b5b1eb7d633c33832b7ff2c02e19a144705036"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/95a8c8fa9f27dce64c40c41c062de7728bf34ab5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a47406c769f72c070386985488f1c4d057df86b2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b3b027ef0cd322bfa839b9aaf5b27551eea54cf6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e3f33b0a1d89d738e2b913dab519226eaf76e15b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-15T13:17:13Z"
  }
}