GHSA-cvmj-47v9-35m9: FUSE-Rust Uninitalized Memory Read And Leak Vulnerability

HIGH
Share
CWE-908
Published
Advisory Summary

GHSA-cvmj-47v9-35m9 is a HIGH uninitalized memory read and leak vulnerability (CWE-908: Use of Uninitialized Resource) affecting FUSE-Rust libraries in the crates.io ecosystem. The issue involves uninitalized memory read and leak caused by fuser crate. Remediation is available by upgrading affected packages to version 0.16.0.

GHSA-cvmj-47v9-35m9 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-cvmj-47v9-35m9
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-908: Use of Uninitialized Resource
Affected Product FUSE-Rust
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-cvmj-47v9-35m9

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

fuser fixed: 0.16.0 
Upgrade fuser to 0.16.0
Verify Direct and Transitive Dependencies

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

inspect dependencies for fuser

How to Check if You Are Affected

To determine whether your application is affected by GHSA-cvmj-47v9-35m9, inspect your project dependencies for FUSE-Rust:

inspect dependencies for fuser

Analyze the terminal output to locate any version of FUSE-Rust in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.16.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-908: Use of Uninitialized Resource, where the product uses or accesses a resource that has not been initialized. In FUSE-Rust, 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

During the creation of a new libfuse session with `fuse_session_new`, the operation list was passed as NULL incorrectly. libfuse expects this argument to always point to list of operations. This caused uninitialized memory read and leaks in libfuse.so.

GHSA-cvmj-47v9-35m9 Affected FUSE-Rust Versions

1 component(s)
Fixed Versions:
0.16.0
Product / Package Ecosystem Affected Versions Fixed Version
fuser
 crates.io
< 0.16.0
0.16.0

References

FUSE-Rust Source Repository REPOSITORY
https://github.com/cberner/fuser/pull/390
FUSE-Rust Source Repository REPOSITORY
https://github.com/cberner/fuser
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2021-0154.html

Frequently Asked Questions

What is GHSA-cvmj-47v9-35m9?
GHSA-cvmj-47v9-35m9 is a security vulnerability in FUSE-Rust involving Uninitalized memory read and leak caused by fuser crate under CWE-908: Use of Uninitialized Resource.
Which FUSE-Rust versions are affected?
Affected versions include releases prior to 0.16.0 across affected packages: fuser.
What version fixes GHSA-cvmj-47v9-35m9?
Upgrading to 0.16.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is fuser affected?
Yes, fuser is affected in releases prior to 0.16.0. Upgrade your dependency to 0.16.0 or later.
What CWE is associated with GHSA-cvmj-47v9-35m9?
GHSA-cvmj-47v9-35m9 is classified under CWE-908: Use of Uninitialized Resource (The product uses or accesses a resource that has not been initialized.).
How can I check crates.io dependencies for GHSA-cvmj-47v9-35m9?
Run the dependency tree command: 'inspect dependencies for fuser'. 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-cvmj-47v9-35m9",
  "modified" : "2025-09-15T17:30:21Z",
  "published" : "2025-09-15T17:30:21Z",
  "aliases" : [ ],
  "summary" : "FUSE-Rust: Uninitalized memory read and leak caused by fuser crate",
  "details" : "During the creation of a new libfuse session with `fuse_session_new`, the operation list was passed as NULL incorrectly. libfuse expects this argument to always point to list of operations. This caused uninitialized memory read and leaks in libfuse.so.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "fuser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.16.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/cberner/fuser/pull/390"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cberner/fuser"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2021-0154.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-908" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-15T17:30:21Z",
    "nvd_published_at" : null
  }
}