Reported

April 24, 2025

Issued

August 12, 2026

Package

hugepage-rs (crates.io)

Type

INFO Unsound

Categories

• memory-corruption

References

• https://github.com/cppcoffee/hugepage-rs/issues/5
• https://github.com/cppcoffee/hugepage-rs/pull/6
• https://github.com/cppcoffee/hugepage-rs/commit/2b30bdf227f39b1c9ed7af16ea0cc3957f88da18

Patched

• >=0.1.1

Affected Functions

Version

hugepage_rs::dealloc

• <=0.1.0

Description

hugepage_rs::dealloc was a publicly accessible safe function. It accepted an arbitrary raw pointer and Layout, then forwarded them to the hugepage allocator's GlobalAlloc::dealloc implementation.

GlobalAlloc::dealloc requires callers to ensure that the pointer denotes a block of memory currently allocated by the allocator and that the layout is the same layout used for the allocation. The safe wrapper neither verified these requirements nor marked them as unsafe preconditions for callers.

Affected versions therefore allowed safe Rust code to call dealloc with an invalid pointer, a pointer not allocated by the hugepage allocator, or an incorrect layout, which could cause undefined behavior.

The upstream repository fixed this in version 0.1.1 by marking dealloc as unsafe and documenting the caller's safety requirements.

Advisory available under CC0-1.0 license.