GitHub Advisoryadvisory · crates.io

GHSA-xcpm-76hf-c9cc Borrowck Scarifices exposes uninitialized memory in any_as_u8_slice

LOW Published 2025-10-22 Modified 2025-10-22 Official page ↗
Ecosystem
crates.io
Packages
borrowck_sacrifices
Severity
Low
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weaknesses
CWE-824
Reviewed
2025-10-22

Affected packages

• crates.io borrowck_sacrifices: < 0.2.0 → fixed in 0.2.0

Description

The safe function `any_as_u8_slice` can create byte slices that reference uninitialized memory when used with types containing padding bytes. The function uses `slice::from_raw_parts` to create a `&[u8]` covering the entire size of a type, including padding bytes. According to Rust's documentation, `from_raw_parts` requires all bytes to be properly initialized, but padding bytes in structs are not guaranteed to be initialized. This violates the safety contract and causes undefined behavior.

Related

Weakness · CWE (1)

  • CWE-824 Access of Uninitialized Pointer weakness

References