CVE-2026-64083: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9794-j36c-v322
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CVSS 5.5
Published
Advisory Summary

CVE-2026-64083 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64083 at a Glance

CVE Identifier CVE-2026-64083
GHSA Identifier GHSA-9794-j36c-v322
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification General Security Weakness
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-2026-64083

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-2026-64083, 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: hwmon: (pmbus/adm1266) reject short block-read responses in the GPIO accessors adm1266_gpio_get() and adm1266_gpio_get_multiple() both compose the pin-status word as pins_status = read_buf[0] + (read_buf[1] << 8); right after i2c_smbus_read_block_data(), guarding only against an error return. A well-behaved device returns 2 bytes for GPIO_STATUS/PDIO_STATUS, but the helper happily reports a 0- or 1-byte response too. If the device returns 0 bytes, both read_buf slots are uninitialized stack memory; if it returns 1 byte, read_buf[1] is. The composed value then flows through set_bit() into the caller's *bits in adm1266_gpio_get_multiple(), or into the return value of adm1266_gpio_get(), and ends up in userspace via gpiolib (sysfs and the char-dev ioctls). That leaks a few bits of kernel stack per request on any device whose firmware glitch, bus error, or hostile slave produces a short block-read response. Add the missing length check to both call sites and surface a short response as -EIO.

References

NVD — CVE-2026-64083 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64083
git.kernel.org/stable/c/64fa932894... WEB
https://git.kernel.org/stable/c/64fa9328948ddcc0f7f3c23ea1756c126d9dffac
git.kernel.org/stable/c/a2d1c81934... WEB
https://git.kernel.org/stable/c/a2d1c819348b36fccbbfcf37c5fa7a50a9b4528f
git.kernel.org/stable/c/a7232f68c4... WEB
https://git.kernel.org/stable/c/a7232f68c43ca62f545049b7f5fbfc75137b843b
git.kernel.org/stable/c/ae25cf2ea9... WEB
https://git.kernel.org/stable/c/ae25cf2ea9ebd06d7ad416647dbdc7b5d0172946
git.kernel.org/stable/c/c603b6c684... WEB
https://git.kernel.org/stable/c/c603b6c6840ac0c6285f5eefea0de6242710af21
git.kernel.org/stable/c/eb3cd9bb59... WEB
https://git.kernel.org/stable/c/eb3cd9bb590460c6127145cb245be925d23f5232
git.kernel.org/stable/c/ee4799becf... WEB
https://git.kernel.org/stable/c/ee4799becf7d2af3778007e22c2e55c4009a49c7
git.kernel.org/stable/c/fd9196aad9... WEB
https://git.kernel.org/stable/c/fd9196aad9e5a3845cea17de3405ebc700382142

Frequently Asked Questions

What is CVE-2026-64083?
CVE-2026-64083 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-2026-64083?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64083?
CVE-2026-64083 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-2026-64083?
CVE-2026-64083 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-64083?
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-9794-j36c-v322",
  "modified" : "2026-09-03T15:32:01Z",
  "published" : "2026-07-19T18:31:51Z",
  "aliases" : [ "CVE-2026-64083" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (pmbus/adm1266) reject short block-read responses in the GPIO accessors\n\nadm1266_gpio_get() and adm1266_gpio_get_multiple() both compose the\npin-status word as\n\n\tpins_status = read_buf[0] + (read_buf[1] << 8);\n\nright after i2c_smbus_read_block_data(), guarding only against an\nerror return.  A well-behaved device returns 2 bytes for\nGPIO_STATUS/PDIO_STATUS, but the helper happily reports a 0- or\n1-byte response too.  If the device returns 0 bytes, both read_buf\nslots are uninitialized stack memory; if it returns 1 byte, read_buf[1]\nis.\n\nThe composed value then flows through set_bit() into the caller's\n*bits in adm1266_gpio_get_multiple(), or into the return value of\nadm1266_gpio_get(), and ends up in userspace via gpiolib (sysfs and\nthe char-dev ioctls).  That leaks a few bits of kernel stack per\nrequest on any device whose firmware glitch, bus error, or hostile\nslave produces a short block-read response.\n\nAdd the missing length check to both call sites and surface a short\nresponse as -EIO.",
  "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-2026-64083"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/64fa9328948ddcc0f7f3c23ea1756c126d9dffac"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a2d1c819348b36fccbbfcf37c5fa7a50a9b4528f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a7232f68c43ca62f545049b7f5fbfc75137b843b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ae25cf2ea9ebd06d7ad416647dbdc7b5d0172946"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c603b6c6840ac0c6285f5eefea0de6242710af21"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eb3cd9bb590460c6127145cb245be925d23f5232"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ee4799becf7d2af3778007e22c2e55c4009a49c7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fd9196aad9e5a3845cea17de3405ebc700382142"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:48Z"
  }
}