CVE-2026-98703: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-h4f8-3q7w-49pw
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Advisory Summary

CVE-2026-98703 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-2026-98703 at a Glance

CVE Identifier CVE-2026-98703
GHSA Identifier GHSA-h4f8-3q7w-49pw
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-2026-98703

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-2026-98703, 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: wifi: mac80211: minstrel_ht: validate fixed rate index The fixed_rate_idx debugfs file is a plain u32 attribute, so any value can be written to it. minstrel_ht_update_stats() then copies the value into mi->max_tp_rate[] and mi->max_prob_rate, and minstrel_ht_set_rate() uses MI_RATE_GROUP()/MI_RATE_IDX() to index minstrel_mcs_groups[] (42 entries) and mi->groups[].rates[] (10 entries) with it. Writing e.g. 65535 selects group 4095 and rate index 15, far outside both arrays. The out-of-bounds entries are dereferenced and updated as struct minstrel_rate_stats (retry counts, etc.), so the invalid index corrupts adjacent kernel memory. With CONFIG_UBSAN_BOUNDS the access is reported as an array-index-out-of-bounds in minstrel_ht_set_rate(). Only a valid group/rate pair, or U32_MAX to disable fixed rate processing, can be used safely, so reject any other value when the debugfs file is written. The file is only reachable through a root-only debugfs mount, so this is not a privilege boundary. The out-of-bounds access is still a bug that must not be reachable through a writable debugfs attribute.

References

NVD — CVE-2026-98703 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-98703
git.kernel.org/stable/c/15fb9e3cea... WEB
https://git.kernel.org/stable/c/15fb9e3cea55fbc378261ce35a32b0f8828f0000
git.kernel.org/stable/c/42aa9feb27... WEB
https://git.kernel.org/stable/c/42aa9feb27b600809414a3c6b0c650bafba542a9
git.kernel.org/stable/c/43082d604a... WEB
https://git.kernel.org/stable/c/43082d604a9937b94ceb2e484403956d0f363324
git.kernel.org/stable/c/f8ab6ae1fa... WEB
https://git.kernel.org/stable/c/f8ab6ae1fa360b0191252677f41e781dcb0ffe6e

Frequently Asked Questions

What is CVE-2026-98703?
CVE-2026-98703 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-2026-98703?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-98703?
CVE-2026-98703 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-98703?
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-h4f8-3q7w-49pw",
  "modified" : "2026-10-18T18:32:00Z",
  "published" : "2026-10-18T18:32:00Z",
  "aliases" : [ "CVE-2026-98703" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: minstrel_ht: validate fixed rate index\n\nThe fixed_rate_idx debugfs file is a plain u32 attribute, so any value\ncan be written to it.  minstrel_ht_update_stats() then copies the value\ninto mi->max_tp_rate[] and mi->max_prob_rate, and\nminstrel_ht_set_rate() uses MI_RATE_GROUP()/MI_RATE_IDX() to index\nminstrel_mcs_groups[] (42 entries) and mi->groups[].rates[] (10 entries)\nwith it.\n\nWriting e.g. 65535 selects group 4095 and rate index 15, far outside\nboth arrays.  The out-of-bounds entries are dereferenced and updated as\nstruct minstrel_rate_stats (retry counts, etc.), so the invalid index\ncorrupts adjacent kernel memory.  With CONFIG_UBSAN_BOUNDS the access is\nreported as an array-index-out-of-bounds in minstrel_ht_set_rate().\n\nOnly a valid group/rate pair, or U32_MAX to disable fixed rate\nprocessing, can be used safely, so reject any other value when the\ndebugfs file is written.\n\nThe file is only reachable through a root-only debugfs mount, so this is\nnot a privilege boundary.  The out-of-bounds access is still a bug that\nmust not be reachable through a writable debugfs attribute.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-98703"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/15fb9e3cea55fbc378261ce35a32b0f8828f0000"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/42aa9feb27b600809414a3c6b0c650bafba542a9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/43082d604a9937b94ceb2e484403956d0f363324"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f8ab6ae1fa360b0191252677f41e781dcb0ffe6e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-18T16:17:23Z"
  }
}