GHSA-grjp-54v3-c442: Usd core Remote Code Execution Vulnerability

MODERATE
Share
CWE-416
Published
Advisory Summary

GHSA-grjp-54v3-c442 is a MODERATE remote code execution vulnerability (CWE-416: Use After Free) affecting Usd core libraries in the PyPI ecosystem. The issue involves openusd file parsing use-after-free remote code execution vulnerability. Remediation is available by upgrading affected packages to version 25.11.

GHSA-grjp-54v3-c442 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-grjp-54v3-c442
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-416: Use After Free
Affected Product Usd core
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-grjp-54v3-c442

To remediate this vulnerability, upgrade all affected Usd core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

usd-core fixed: 25.11 
pip install usd-core>=25.11
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show usd-core

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-grjp-54v3-c442, inspect your installed packages using pip:

pip show usd-core

Analyze the terminal output to locate any version of Usd core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 25.11), your application is affected.

Note: The pip show usd-core command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. In Usd core, 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

# Patch This is fixed with [commit b953092](https://github.com/PixarAnimationStudios/OpenUSD/commit/b9530922b6a8ea72cd43661226b693fff8abbe4c), with the fix available in OpenUSD 25.11 and onwards. # Summary We have been advised by Zero Day Initiative that our usage of the USD framework may constitute a Use-After-Free Remote Code Execution Vulnerability. They have sent us the attached file illustrating the issue. Indeed, we see a use after free exception when running the file through our importer with an address sanitizer. [zdi-23709-poc0.zip](https://github.com/user-attachments/files/17474297/zdi-23709-poc0.zip) Thanks in advance.

GHSA-grjp-54v3-c442 Affected Usd core Versions

1 component(s)
Fixed Versions:
25.11
Product / Package Ecosystem Affected Versions Fixed Version
usd-core
pypi/usd-core
PyPI
< 25.11
25.11

References

GitHub Advisory / Wiki ADVISORY
https://github.com/PixarAnimationStudios/OpenUSD/security/advisories/GHSA-grjp-54v3-c442
Usd core Source Repository REPOSITORY
https://github.com/PixarAnimationStudios/OpenUSD
Security Fix Commit FIX COMMIT
https://github.com/PixarAnimationStudios/OpenUSD/commit/b9530922b6a8ea72cd43661226b693fff8abbe4c

Frequently Asked Questions

What is GHSA-grjp-54v3-c442?
GHSA-grjp-54v3-c442 is a security vulnerability in Usd core involving OpenUSD File Parsing Use-After-Free Remote Code Execution Vulnerability under CWE-416: Use After Free.
Which Usd core versions are affected?
Affected versions include releases prior to 25.11 across affected packages: usd-core.
What version fixes GHSA-grjp-54v3-c442?
Upgrading to 25.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is usd-core affected?
Yes, usd-core is affected in releases prior to 25.11. Upgrade your dependency to 25.11 or later.
What CWE is associated with GHSA-grjp-54v3-c442?
GHSA-grjp-54v3-c442 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check PyPI dependencies for GHSA-grjp-54v3-c442?
Run the dependency tree command: 'pip show usd-core'. 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-grjp-54v3-c442",
  "modified" : "2025-10-29T22:13:03Z",
  "published" : "2025-10-29T22:13:03Z",
  "aliases" : [ ],
  "summary" : "OpenUSD File Parsing Use-After-Free Remote Code Execution Vulnerability",
  "details" : "# Patch\nThis is fixed with [commit b953092](https://github.com/PixarAnimationStudios/OpenUSD/commit/b9530922b6a8ea72cd43661226b693fff8abbe4c), with the fix available in OpenUSD 25.11 and onwards.\n\n# Summary\nWe have been advised by Zero Day Initiative that our usage of the USD framework may constitute a Use-After-Free Remote Code Execution Vulnerability. They have sent us the attached file illustrating the issue. Indeed, we see a use after free exception when running the file through our importer with an address sanitizer.\n\n[zdi-23709-poc0.zip](https://github.com/user-attachments/files/17474297/zdi-23709-poc0.zip)\n\nThanks in advance.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "usd-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "25.11"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 25.08"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/PixarAnimationStudios/OpenUSD/security/advisories/GHSA-grjp-54v3-c442"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PixarAnimationStudios/OpenUSD/commit/b9530922b6a8ea72cd43661226b693fff8abbe4c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/PixarAnimationStudios/OpenUSD"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-29T22:13:03Z",
    "nvd_published_at" : null
  }
}