CVE-2026-74339: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-5rp2-cp2v-9mcx
Share
Published
Advisory Summary

CVE-2026-74339 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-2026-74339 at a Glance

CVE Identifier CVE-2026-74339
GHSA Identifier GHSA-5rp2-cp2v-9mcx
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-2026-74339

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-2026-74339, 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: Clear variable event pointer on read snd_seq_read() copies a queued variable-length event header to userspace before expanding the payload. Queued variable-length events use SNDRV_SEQ_EXT_CHAINED internally, and data.ext.ptr points at the first extension cell. The read side strips SNDRV_SEQ_EXT_* bits from data.ext.len before the copy, but it leaves data.ext.ptr untouched. A userspace sequencer client can therefore write a direct variable event to itself and read back the extension-cell kernel address from the returned header. Clear the temporary header pointer before copy_to_user(). The original queued event remains unchanged and is still passed to snd_seq_expand_var_event(), so payload expansion keeps using the internal chain.

References

NVD — CVE-2026-74339 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74339
git.kernel.org/stable/c/14fe4f75fd... WEB
https://git.kernel.org/stable/c/14fe4f75fd5309d6b75f8e840ada88912b374207
git.kernel.org/stable/c/6b52211eba... WEB
https://git.kernel.org/stable/c/6b52211eba213c461f68922708a99d8190c1fcd5
git.kernel.org/stable/c/705dd6dcbc... WEB
https://git.kernel.org/stable/c/705dd6dcbc0ea87351c660c1a6443f85f1001c76
git.kernel.org/stable/c/74ac1ce1f4... WEB
https://git.kernel.org/stable/c/74ac1ce1f4afdb3b80b6742fa28fb86c8c51d31b
git.kernel.org/stable/c/c2ac9287e8... WEB
https://git.kernel.org/stable/c/c2ac9287e89916da684c2a548798351e63eb59ee
git.kernel.org/stable/c/e0c3edd864... WEB
https://git.kernel.org/stable/c/e0c3edd86414534cfd179fefe45b38c29c01ae7a
git.kernel.org/stable/c/f29243c211... WEB
https://git.kernel.org/stable/c/f29243c211928114f8b906e0a3fee77c236f14c8

Frequently Asked Questions

What is CVE-2026-74339?
CVE-2026-74339 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-2026-74339?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74339?
CVE-2026-74339 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74339?
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-5rp2-cp2v-9mcx",
  "modified" : "2026-08-15T06:32:30Z",
  "published" : "2026-08-15T06:32:30Z",
  "aliases" : [ "CVE-2026-74339" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: seq: Clear variable event pointer on read\n\nsnd_seq_read() copies a queued variable-length event header to userspace\nbefore expanding the payload. Queued variable-length events use\nSNDRV_SEQ_EXT_CHAINED internally, and data.ext.ptr points at the first\nextension cell.\n\nThe read side strips SNDRV_SEQ_EXT_* bits from data.ext.len before the\ncopy, but it leaves data.ext.ptr untouched. A userspace sequencer client\ncan therefore write a direct variable event to itself and read back the\nextension-cell kernel address from the returned header.\n\nClear the temporary header pointer before copy_to_user(). The original\nqueued event remains unchanged and is still passed to\nsnd_seq_expand_var_event(), so payload expansion keeps using the\ninternal chain.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74339"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14fe4f75fd5309d6b75f8e840ada88912b374207"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6b52211eba213c461f68922708a99d8190c1fcd5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/705dd6dcbc0ea87351c660c1a6443f85f1001c76"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/74ac1ce1f4afdb3b80b6742fa28fb86c8c51d31b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c2ac9287e89916da684c2a548798351e63eb59ee"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e0c3edd86414534cfd179fefe45b38c29c01ae7a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f29243c211928114f8b906e0a3fee77c236f14c8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T06:22:34Z"
  }
}