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Unsound usages of `std::slice::from_raw_parts`GHSA-gw5w-5j7f-jmjj

GHSA-gw5w-5j7f-jmjj is a security vulnerability in pprof. A fix is available for pprof — see the affected versions and patch details below.

Also known asRUSTSEC-2024-0408
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 10, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🦀pprof

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

The library breaks the safety assumptions when using unsafe API std::slice::from_raw_parts. First, when using the API in iterator implementation (TempFdArrayIterator.next), generic type could be any type, which would create and pass a misaligned pointer to the unsafe API. Second, when validating the address, the code passed the type c_void, which could also be any type, leading to potential uninitialized memory exposure.

Two unsound usages here highlight the necessity for developers to perform type checks before doing type conversion with unsafe API.

The panic caused by the misalignment causes several downstream applications (e.g., greptimedb) to crash when using pprof::report::ReportBuilder::build.

This was patched in 0.14.0.

The developer also suggested moving to pprof2.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iopprofall versions0.14.0cargo update -p pprof --precise 0.14.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update pprof to 0.14.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-gw5w-5j7f-jmjj is resolved across your whole dependency graph.

  3. 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

The library breaks the safety assumptions when using unsafe API `std::slice::from_raw_parts`. First, when using the API in iterator implementation (`TempFdArrayIterator.next`), generic type could be any type, which would create and pass a misaligned pointer to the unsafe API. Second, when validating the address, the code passed the type `c_void`, which could also be any type, leading to potential uninitialized memory exposure. Two unsound usages here highlight the necessity for developers to perform type checks before doing type conversion with unsafe API. The panic caused by the misalig
O3 Security · Impact-Aware SCA

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Unsound usages of `std::slice::from_raw_parts`