CVE-2026-74463: Software Security Vulnerability Vulnerability

UNKNOWN
Advisory Identifier: GHSA-2xgc-rc56-qqm7
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Advisory Summary

CVE-2026-74463 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-2026-74463 at a Glance

CVE Identifier CVE-2026-74463
GHSA Identifier GHSA-2xgc-rc56-qqm7
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-2026-74463

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-2026-74463, 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: i2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock Fix a severe AB/BA deadlock between the Common Clock Framework (CCF) and the I2C adapter lock, which triggers when an I2C-controlled clock generator client (like the Si5351) is registered or modified under the CCF. During an i2c client clock (generator) frequency change, the CCF acquires its global 'prepare_lock' mutex and the driver calls i2c_transfer() to update the client's chip registers, stalling for the adapter's I2C bus lock. Concurrently, an independent, parallel transfer on the same bus (e.g., a GPIO expander handling LEDs) can hold the I2C adapter lock. Inside this parallel transfer path, jz4780_i2c_set_speed() calls clk_get_rate() on the host controller's input clock to calculate bus timings. This call attempts to acquire the blocked CCF 'prepare_lock', creating a circular dependency that freezes the system. The jz4780 host controller clock itself is static and never changes at runtime. However, calling clk_get_rate() inside the active transfer path introduces an unnecessary dependency on the CCF internal locks. Eliminate this synchronous clk_get_rate() call from the active transfer path by caching the static host peripheral clock rate once - inside the private jz4780_i2c structure during jz4780_i2c_probe(). Update jz4780_i2c_set_speed() to use this cached value, safely decoupling active I2C transactions from the CCF internal locks without any risk of stale timings. Assisted-by web based Google AI (pinpointing the bug and writing the message).

References

NVD — CVE-2026-74463 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74463
git.kernel.org/stable/c/14429dc1c7... WEB
https://git.kernel.org/stable/c/14429dc1c756c35e106f01ff09cadccb82f5531d
git.kernel.org/stable/c/19b783335d... WEB
https://git.kernel.org/stable/c/19b783335d62e7a2367436a6e1f1b37da1878360
git.kernel.org/stable/c/aa1944b52d... WEB
https://git.kernel.org/stable/c/aa1944b52d6492c48bdd17046578aa0d953546e6
git.kernel.org/stable/c/b6cb47e186... WEB
https://git.kernel.org/stable/c/b6cb47e186abba85a3b08aa3023067ab82577286
git.kernel.org/stable/c/cc111696ef... WEB
https://git.kernel.org/stable/c/cc111696ef420f6bb552b2526530067977f0b406
git.kernel.org/stable/c/d99607c888... WEB
https://git.kernel.org/stable/c/d99607c888f26e8a4e9fe9772860cef4aff86bb4
git.kernel.org/stable/c/deffad5bb4... WEB
https://git.kernel.org/stable/c/deffad5bb4f8b4f09e46252f24754ddc9960b244
git.kernel.org/stable/c/f96a719d9f... WEB
https://git.kernel.org/stable/c/f96a719d9f8a797105ec5cacf568ab128e33391f

Frequently Asked Questions

What is CVE-2026-74463?
CVE-2026-74463 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-2026-74463?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-74463?
CVE-2026-74463 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-74463?
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-2xgc-rc56-qqm7",
  "modified" : "2026-08-19T18:32:28Z",
  "published" : "2026-08-15T15:30:33Z",
  "aliases" : [ "CVE-2026-74463" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: jz4780: Cache host clock rate at probe to prevent CCF prepare_lock deadlock\n\nFix a severe AB/BA deadlock between the Common Clock Framework (CCF)\nand the I2C adapter lock, which triggers when an I2C-controlled clock\ngenerator client (like the Si5351) is registered or modified under the CCF.\n\nDuring an i2c client clock (generator) frequency change, the CCF acquires its global\n'prepare_lock' mutex and the driver calls i2c_transfer() to update the client's\nchip registers, stalling for the adapter's I2C bus lock.\n\nConcurrently, an independent, parallel transfer on the same bus (e.g., a GPIO\nexpander handling LEDs) can hold the I2C adapter lock. Inside this parallel\ntransfer path, jz4780_i2c_set_speed() calls clk_get_rate() on the host\ncontroller's input clock to calculate bus timings. This call attempts to acquire\nthe blocked CCF 'prepare_lock', creating a circular dependency that freezes\nthe system.\n\nThe jz4780 host controller clock itself is static and never changes at runtime.\n\nHowever, calling clk_get_rate() inside the active transfer path introduces\nan unnecessary dependency on the CCF internal locks.\n\nEliminate this synchronous clk_get_rate() call from the active transfer\npath by caching the static host peripheral clock rate once - inside the private\njz4780_i2c structure during jz4780_i2c_probe(). Update jz4780_i2c_set_speed()\nto use this cached value, safely decoupling active I2C transactions from the\nCCF internal locks without any risk of stale timings.\n\nAssisted-by web based Google AI (pinpointing the bug and writing the message).",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-74463"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/14429dc1c756c35e106f01ff09cadccb82f5531d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/19b783335d62e7a2367436a6e1f1b37da1878360"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/aa1944b52d6492c48bdd17046578aa0d953546e6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b6cb47e186abba85a3b08aa3023067ab82577286"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cc111696ef420f6bb552b2526530067977f0b406"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d99607c888f26e8a4e9fe9772860cef4aff86bb4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/deffad5bb4f8b4f09e46252f24754ddc9960b244"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f96a719d9f8a797105ec5cacf568ab128e33391f"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : null,
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-15T13:17:50Z"
  }
}