Security context
What an agent needs to avoid regressing past fixes and find the next vuln in this repo.
matklad/once_cell
master @ 80fe900
1
Fixes
1
CVEs
HIGH
Peak severity
Highlights
Data Race: 1 prior fix. Scrutinize any change in this area.
src/lib.rs: most-fixed (1 issue). Treat as high-risk during review.
1 high-severity fix in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Data Race: Inadequate atomic memory ordering (Relaxed instead of Acquire/Release) in OnceCell concurrent access allowed data races, violating Rust's safety guarantees and potentially leading to undefined behavior or memory corruption.
Improper Input Handling: A panic during the initialization of Lazy instances can lead to an unexpected application crash, causing a denial of service under specific initialization conditions as tracked in CVE-2019-16141.