CVE-2026-90109: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-6qjr-4f2g-wppr
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Advisory Summary

CVE-2026-90109 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-2026-90109 at a Glance

CVE Identifier CVE-2026-90109
GHSA Identifier GHSA-6qjr-4f2g-wppr
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-2026-90109

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-2026-90109, 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: sched: fix 32-bit backlog wrap in gred, bfifo and plug enqueue gred_enqueue(), bfifo_enqueue() and plug_enqueue() admit a packet when the current backlog plus the packet length fits within the queue limit: sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit (gred default VQ) gred_backlog+qdisc_pkt_len(skb) <= q->limit (gred configured VQ) sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit (bfifo) sch->qstats.backlog + skb->len <= q->limit (plug) sch->qstats.backlog and q->backlog are u32, and qdisc_pkt_len()/skb->len are unsigned int, so all sums are computed in 32 bits and wrap at 2^32. Once the true backlog exceeds 4 GiB the wrapped sum becomes small and admission keeps succeeding, so the queue grows without bound and the kernel can be driven to OOM. Promote the sums to u64 so admission stops once the true backlog exceeds the limit. The limit is u32, so the bounded queue stays below 2^32 and the stored u32 backlog never wraps. The bug can only be reproduced as root (albeit with ridiculous setup): attach a gred (or bfifo/plug) qdisc with a limit near 4 GiB, leaving the default VQ unconfigured (for gred), and drive >4 GiB of queued traffic (e.g. via a size table / stab to inflate qdisc_pkt_len, or sustained high-rate traffic). The u32 backlog+len sum wraps at 2^32, admission keeps succeeding, and the queue grows unboundedly to OOM.

References

NVD — CVE-2026-90109 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90109
git.kernel.org/stable/c/3fb51b3960... WEB
https://git.kernel.org/stable/c/3fb51b3960342bbee563543f8d33710fd0fb5a96
git.kernel.org/stable/c/4c660ee8c8... WEB
https://git.kernel.org/stable/c/4c660ee8c809637909f4f7eb1017f7b9401c75c4
git.kernel.org/stable/c/8b2d8c70b9... WEB
https://git.kernel.org/stable/c/8b2d8c70b969bf84f9e248bfaf2a7135129f2eb6
git.kernel.org/stable/c/d98b92f3d5... WEB
https://git.kernel.org/stable/c/d98b92f3d57976ae185238946ec5ea0be32195aa

Frequently Asked Questions

What is CVE-2026-90109?
CVE-2026-90109 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-2026-90109?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90109?
CVE-2026-90109 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90109?
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-6qjr-4f2g-wppr",
  "modified" : "2026-09-17T18:31:51Z",
  "published" : "2026-09-17T18:31:51Z",
  "aliases" : [ "CVE-2026-90109" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: fix 32-bit backlog wrap in gred, bfifo and plug enqueue\n\ngred_enqueue(), bfifo_enqueue() and plug_enqueue() admit a packet when the\ncurrent backlog plus the packet length fits within the queue limit:\n\n  sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit (gred default VQ)\n  gred_backlog+qdisc_pkt_len(skb) <= q->limit  (gred configured VQ)\n  sch->qstats.backlog + qdisc_pkt_len(skb) <= sch->limit (bfifo)\n  sch->qstats.backlog + skb->len <= q->limit             (plug)\n\nsch->qstats.backlog and q->backlog are u32, and qdisc_pkt_len()/skb->len\nare unsigned int, so all sums are computed in 32 bits and wrap at 2^32.\nOnce the true backlog exceeds 4 GiB the wrapped sum becomes small and\nadmission keeps succeeding, so the queue grows without bound and the kernel\ncan be driven to OOM.\n\nPromote the sums to u64 so admission stops once the true backlog exceeds\nthe limit.  The limit is u32, so the bounded queue stays below 2^32 and\nthe stored u32 backlog never wraps.\n\nThe bug can only be reproduced as root (albeit with ridiculous setup):\n attach a gred (or bfifo/plug) qdisc with a limit near 4 GiB,\n leaving the default VQ unconfigured (for gred), and drive >4 GiB of\n queued traffic (e.g. via a size table / stab to inflate qdisc_pkt_len,\n or sustained high-rate traffic). The u32 backlog+len sum wraps at 2^32,\n admission keeps succeeding, and the queue grows unboundedly to OOM.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90109"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3fb51b3960342bbee563543f8d33710fd0fb5a96"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4c660ee8c809637909f4f7eb1017f7b9401c75c4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8b2d8c70b969bf84f9e248bfaf2a7135129f2eb6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d98b92f3d57976ae185238946ec5ea0be32195aa"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:02Z"
  }
}