CVE-2026-90220: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-r7hx-2638-9jpm
Share
Published
Advisory Summary

CVE-2026-90220 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-2026-90220 at a Glance

CVE Identifier CVE-2026-90220
GHSA Identifier GHSA-r7hx-2638-9jpm
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-2026-90220

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-2026-90220, 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: ALSA: seq: Don't leak the extension cell pointer in the bounce payload The bounce_error_event() embeds the failed event in the bounce payload by pointing data.ext.ptr at it. When that event is a queued variable-length event, its own data.ext.ptr holds the address of its first extension cell, put there by snd_seq_event_dup(). The payload goes out verbatim through snd_seq_expand_var_event(), so the address reaches userspace. That is the same address commit 705dd6dcbc0e ("ALSA: seq: Clear variable event pointer on read") removed from the event header. The read path still clears it there, just above the call that expands the payload. Embed a sanitised copy instead, treated exactly as snd_seq_read() treats the header. A stack copy is enough because delivery is synchronous and snd_seq_event_dup() copies before returning. An unprivileged client reaches this by setting SNDRV_SEQ_FILTER_BOUNCE, queueing a variable-length event to a port that does not exist and reading the bounce back. Eight bytes on 64-bit, from its own pool.

References

NVD — CVE-2026-90220 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90220
git.kernel.org/stable/c/42c3f856d1... WEB
https://git.kernel.org/stable/c/42c3f856d13a91a0d4c302a0c6854813621136db
git.kernel.org/stable/c/59e1592d3c... WEB
https://git.kernel.org/stable/c/59e1592d3c270ff4642d5d6dc55c545306eb0693
git.kernel.org/stable/c/6e6e471eef... WEB
https://git.kernel.org/stable/c/6e6e471eef1d5d8cb056c7d364023fe048249204
git.kernel.org/stable/c/b1e8d40663... WEB
https://git.kernel.org/stable/c/b1e8d40663997aacaa198f37ce6893e07aaba77a

Frequently Asked Questions

What is CVE-2026-90220?
CVE-2026-90220 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-2026-90220?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-90220?
CVE-2026-90220 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90220?
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-r7hx-2638-9jpm",
  "modified" : "2026-09-17T18:31:56Z",
  "published" : "2026-09-17T18:31:56Z",
  "aliases" : [ "CVE-2026-90220" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: Don't leak the extension cell pointer in the bounce payload\n\nThe bounce_error_event() embeds the failed event in the bounce payload\nby pointing data.ext.ptr at it.  When that event is a queued\nvariable-length event, its own data.ext.ptr holds the address of its\nfirst extension cell, put there by snd_seq_event_dup().  The payload\ngoes out verbatim through snd_seq_expand_var_event(), so the address\nreaches userspace.\n\nThat is the same address commit 705dd6dcbc0e (\"ALSA: seq: Clear\nvariable event pointer on read\") removed from the event header.  The\nread path still clears it there, just above the call that expands the\npayload.\n\nEmbed a sanitised copy instead, treated exactly as snd_seq_read()\ntreats the header.  A stack copy is enough because delivery is\nsynchronous and snd_seq_event_dup() copies before returning.\n\nAn unprivileged client reaches this by setting SNDRV_SEQ_FILTER_BOUNCE,\nqueueing a variable-length event to a port that does not exist and\nreading the bounce back.  Eight bytes on 64-bit, from its own pool.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90220"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/42c3f856d13a91a0d4c302a0c6854813621136db"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/59e1592d3c270ff4642d5d6dc55c545306eb0693"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6e6e471eef1d5d8cb056c7d364023fe048249204"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b1e8d40663997aacaa198f37ce6893e07aaba77a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-17T17:17:17Z"
  }
}