How severe is GHSA-cvmj-47v9-35m9?

No CVSS score has been assigned to GHSA-cvmj-47v9-35m9 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-cvmj-47v9-35m9?

GHSA-cvmj-47v9-35m9 affects the following packages: fuser (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-cvmj-47v9-35m9?

Update fuser to 0.16.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cvmj-47v9-35m9 is resolved across your whole dependency graph.

How do I detect GHSA-cvmj-47v9-35m9 in my crates.io dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for fuser, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-cvmj-47v9-35m9 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is GHSA-cvmj-47v9-35m9 actively exploited in the wild?

No public exploit code has been indexed for GHSA-cvmj-47v9-35m9 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-cvmj-47v9-35m9 published, and has it been updated?

GHSA-cvmj-47v9-35m9 was published on September 15, 2025 and was last updated on October 28, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🦀 crates.io

Not in CISA KEV

FUSE-Rust: Uninitalized memory read and leak caused by fuser crateGHSA-cvmj-47v9-35m9

Fix: cberner/fuser#390

GHSA-cvmj-47v9-35m9 is a security vulnerability in fuser. A fix is available for fuser — see the affected versions and patch details below.

Also known asRUSTSEC-2021-0154

Published

Sep 15, 2025

Updated

Oct 28, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 28, 2025 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🦀fuser

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`fuser`	all versions	0.16.0`cargo update -p fuser --precise 0.16.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for fuser, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update fuser to 0.16.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cvmj-47v9-35m9 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

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.

O3 Security · Impact-Aware SCA

Is GHSA-cvmj-47v9-35m9 in your dependencies?

Find it across crates.io, including transitive dependencies.

Scan my dependencies How O3 SCA works