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.
Real-World Exposure
pprofReal-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
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | pprof | all versions | 0.14.0cargo update -p pprof --precise 0.14.0 |
Detection & mitigation playbook
Open-source dependencyDetect
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.
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.
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
Is GHSA-gw5w-5j7f-jmjj in your dependencies?
Find it across crates.io, including transitive dependencies.