CVE-2026-98374: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2q84-vc4j-mp23
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Advisory Summary

CVE-2026-98374 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-2026-98374 at a Glance

CVE Identifier CVE-2026-98374
GHSA Identifier GHSA-2q84-vc4j-mp23
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-2026-98374

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-2026-98374, 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: tcp: fix use-after-free of retransmit_skb_hint in tcp_send_synack() When tcp_send_synack() replaces the cloned SYN skb at the head of the retransmit queue with a copy, it frees the original with tcp_rtx_queue_unlink_and_free() and only repairs tp->highest_sack. tp->retransmit_skb_hint keeps pointing at the freed skbuff_fclone_cache object. The dangling hint is read in tcp_verify_retransmit_hint() and used as the root of the rbtree walk in tcp_xmit_retransmit_queue(). An unprivileged TFO client (sendmsg(MSG_FASTOPEN)) can arm the hint with an attacker-supplied ICMP fragmentation-needed message, after which a simultaneous open frees the armed SYN skb: BUG: KASAN: slab-use-after-free in tcp_mark_skb_lost (net/ipv4/tcp_input.c:1316) Read of size 4 at addr ffff88800604d928 by task swapper/1/0 Call Trace: tcp_mark_skb_lost (net/ipv4/tcp_input.c:1316) tcp_simple_retransmit (net/ipv4/tcp_input.c:3158) tcp_v4_err (net/ipv4/tcp_ipv4.c:587) Sync the hint to the copy.

References

NVD — CVE-2026-98374 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98374
git.kernel.org/stable/c/0f87720c7e... WEB
https://git.kernel.org/stable/c/0f87720c7e4bcab07c24888b3cf12bfe857bb90e
git.kernel.org/stable/c/631aa4cb45... WEB
https://git.kernel.org/stable/c/631aa4cb45099f09e9385dd786bd291c6270bfc4
git.kernel.org/stable/c/71d45049b0... WEB
https://git.kernel.org/stable/c/71d45049b0d631dfdbf3c65305f7fca676de023b
git.kernel.org/stable/c/c5b4da1f40... WEB
https://git.kernel.org/stable/c/c5b4da1f403a658c1c19766be2b426003ada419f
git.kernel.org/stable/c/e3ea71cb14... WEB
https://git.kernel.org/stable/c/e3ea71cb1408a013ed4e8a757b815f1a919324bd
git.kernel.org/stable/c/fad6d42965... WEB
https://git.kernel.org/stable/c/fad6d429651e748365e93ca54645accc212f0018
git.kernel.org/stable/c/fe99bbeee5... WEB
https://git.kernel.org/stable/c/fe99bbeee5c5dbd3abc30721a8079ced59649d97

Frequently Asked Questions

What is CVE-2026-98374?
CVE-2026-98374 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-2026-98374?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98374?
CVE-2026-98374 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98374?
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-2q84-vc4j-mp23",
  "modified" : "2026-10-07T15:31:59Z",
  "published" : "2026-10-07T15:31:59Z",
  "aliases" : [ "CVE-2026-98374" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: fix use-after-free of retransmit_skb_hint in tcp_send_synack()\n\nWhen tcp_send_synack() replaces the cloned SYN skb at the head of the\nretransmit queue with a copy, it frees the original with\ntcp_rtx_queue_unlink_and_free() and only repairs tp->highest_sack.\ntp->retransmit_skb_hint keeps pointing at the freed\nskbuff_fclone_cache object.\n\nThe dangling hint is read in tcp_verify_retransmit_hint() and used as\nthe root of the rbtree walk in tcp_xmit_retransmit_queue().  An\nunprivileged TFO client (sendmsg(MSG_FASTOPEN)) can arm the hint with\nan attacker-supplied ICMP fragmentation-needed message, after which a\nsimultaneous open frees the armed SYN skb:\n\n  BUG: KASAN: slab-use-after-free in tcp_mark_skb_lost (net/ipv4/tcp_input.c:1316)\n  Read of size 4 at addr ffff88800604d928 by task swapper/1/0\n  Call Trace:\n   tcp_mark_skb_lost (net/ipv4/tcp_input.c:1316)\n   tcp_simple_retransmit (net/ipv4/tcp_input.c:3158)\n   tcp_v4_err (net/ipv4/tcp_ipv4.c:587)\n\nSync the hint to the copy.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98374"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0f87720c7e4bcab07c24888b3cf12bfe857bb90e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/631aa4cb45099f09e9385dd786bd291c6270bfc4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/71d45049b0d631dfdbf3c65305f7fca676de023b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c5b4da1f403a658c1c19766be2b426003ada419f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e3ea71cb1408a013ed4e8a757b815f1a919324bd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fad6d429651e748365e93ca54645accc212f0018"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fe99bbeee5c5dbd3abc30721a8079ced59649d97"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-07T13:17:23Z"
  }
}