CVE-2026-64409: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-x8qw-hc9f-qxq2
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CVSS 5.5
CWE-835
Published
Advisory Summary

CVE-2026-64409 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64409 at a Glance

CVE Identifier CVE-2026-64409
GHSA Identifier GHSA-x8qw-hc9f-qxq2
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-64409

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-2026-64409, 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 CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop'), where the product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. 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: Bluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work() Every once in a while we see a hung btmtksdio_flush() task: INFO: task kworker/u17:0:189 blocked for more than 122 seconds. __cancel_work_timer+0x3f4/0x460 cancel_work_sync+0x1c/0x2c btmtksdio_flush+0x2c/0x40 hci_dev_open_sync+0x10c4/0x2190 [..] It all boils down to incorrect time_is_before_jiffies() usage in btmtksdio_txrx_work(). The btmtksdio_txrx_work() loop is expected to be terminated if running for longer than 5*HZ. However the timeout check is twisted: time_is_before_jiffies(old_jiffies + 5*HZ) evaluates to true when old_jiffies + 5*HZ is in the past i.e. when a timeout has occurred. Using OR with time_is_before_jiffies(txrx_timeout) means that: - before the 5-second timeout: the condition is `int_status || false`, so it loops as long as there are pending interrupts. - after the 5-second timeout: the condition becomes `int_status || true`, which is always true. When the loop becomes infinite btmtksdio_txrx_work() loop never terminates and never releases the SDIO host. Fix loop termination condition to actually enforce a 5*HZ timeout.

References

NVD — CVE-2026-64409 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64409
git.kernel.org/stable/c/0039bdde36... WEB
https://git.kernel.org/stable/c/0039bdde36b23ccf1196635f1d52c5490481544d
git.kernel.org/stable/c/0f0a83e26a... WEB
https://git.kernel.org/stable/c/0f0a83e26a9c7fd4b243c315ce07161d2496d83d
git.kernel.org/stable/c/466540e045... WEB
https://git.kernel.org/stable/c/466540e045d01fcacf383a5beb8a2dad2fc53a26
git.kernel.org/stable/c/7b429d6110... WEB
https://git.kernel.org/stable/c/7b429d611060e87752e848851815537963726493
git.kernel.org/stable/c/a257407e2b... WEB
https://git.kernel.org/stable/c/a257407e2bbbb099ed427719a50563f67fa366d8
git.kernel.org/stable/c/f6682c23b6... WEB
https://git.kernel.org/stable/c/f6682c23b6fac4780d297ae4662053d17e58fd52

Frequently Asked Questions

What is CVE-2026-64409?
CVE-2026-64409 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64409?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64409?
CVE-2026-64409 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-64409?
CVE-2026-64409 is classified under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') (The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.).
How can I check Maven dependencies for CVE-2026-64409?
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-x8qw-hc9f-qxq2",
  "modified" : "2026-09-04T15:35:53Z",
  "published" : "2026-07-25T12:31:34Z",
  "aliases" : [ "CVE-2026-64409" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work()\n\nEvery once in a while we see a hung btmtksdio_flush() task:\n\n INFO: task kworker/u17:0:189 blocked for more than 122 seconds.\n __cancel_work_timer+0x3f4/0x460\n cancel_work_sync+0x1c/0x2c\n btmtksdio_flush+0x2c/0x40\n hci_dev_open_sync+0x10c4/0x2190\n [..]\n\nIt all boils down to incorrect time_is_before_jiffies() usage in\nbtmtksdio_txrx_work().  The btmtksdio_txrx_work() loop is expected\nto be terminated if running for longer than 5*HZ.  However the\ntimeout check is twisted:  time_is_before_jiffies(old_jiffies + 5*HZ)\nevaluates to true when old_jiffies + 5*HZ is in the past i.e. when a\ntimeout has occurred.  Using OR with time_is_before_jiffies(txrx_timeout)\nmeans that:\n- before the 5-second timeout: the condition is `int_status || false`,\n  so it loops as long as there are pending interrupts.\n- after the 5-second timeout: the condition becomes `int_status || true`,\n  which is always true.\n\nWhen the loop becomes infinite btmtksdio_txrx_work() loop never\nterminates and never releases the SDIO host.\n\nFix loop termination condition to actually enforce a 5*HZ timeout.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64409"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0039bdde36b23ccf1196635f1d52c5490481544d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0f0a83e26a9c7fd4b243c315ce07161d2496d83d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/466540e045d01fcacf383a5beb8a2dad2fc53a26"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7b429d611060e87752e848851815537963726493"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a257407e2bbbb099ed427719a50563f67fa366d8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f6682c23b6fac4780d297ae4662053d17e58fd52"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-835" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-25T10:17:24Z"
  }
}