Double-free in `vmem` storage reachable from safe Rust (predecessor of `oneringbuf`)

mutringbuf is the archived predecessor of oneringbuf — the crate was renamed and the GitHub repository was archived on 2025-11-20. All released versions up to 1.0.0 carry the same vmem-feature double-free bug that affects oneringbuf, with the same code paths and the same reproduction shape. When...

GHSA-FF9Q-RM55-Q7QR diesel-async may expose uninitialized padding bytes for MySQL temporal columns

Summary diesel-async exposes uninitialized stack padding to safe code on every read of a MySQL DATE, TIME, DATETIME, or TIMESTAMP column. Reading that buffer is undefined behavior, and the leaked bytes can contain stale heap/stack contents, so this is both a soundness bug and a potential...

`simd-json-derive` vulnerable to `MaybeUninit` misuse

An invalid use of MaybeUninit::uninit.assumeinit in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can...

GHSA-PQPW-89W5-82V5 `simd-json-derive` vulnerable to `MaybeUninit` misuse

An invalid use of MaybeUninit::uninit.assumeinit in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can...

PT-2024-40411 · Unknown · Simd-Json-Derive

Name of the Vulnerable Software and Affected Versions: simd-json-derive versions prior to 0.12.0 Description: The issue arises from an invalid use of MaybeUninit::uninit.assume init in the derive macro of simd-json-derive, leading to undefined behavior. This misuse can cause invalid memory access...

lexical-core has multiple soundness issues

RUSTSEC-2024-0377 contains multiple soundness issues: 1. Bytes::read allows creating instances of types with invalid bit patterns 1. BytesIter::read advances iterators out of bounds 1. The BytesIter trait has safety invariants but is public and not marked unsafe 1. writefloat calls...

`MaybeUninit` misuse in `simd-json-derive`

An invalid use of MaybeUninit::uninit.assumeinit in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can...

RUSTSEC-2023-0087 `MaybeUninit` misuse in `simd-json-derive`

An invalid use of MaybeUninit::uninit.assumeinit in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can...

Multiple soundness issues

RUSTSEC-2024-0377 contains multiple soundness issues: 1. Bytes::read allows creating instances of types with invalid bit patterns 1. BytesIter::read advances iterators out of bounds 1. The BytesIter trait has safety invariants but is public and not marked unsafe 1. writefloat calls...

GHSA-87MF-9WG6-PPF8 Ouroboros is Unsound

In 0.15.0 and prior, Ouroboros works internally by creating a struct where all uses of 'this are replaced by 'static. However, a recent addition to Miri checks that references passed to functions are valid during the entire execution of the function, even when those references are passed inside a...

Ouroboros is Unsound

In 0.15.0 and prior, Ouroboros works internally by creating a struct where all uses of 'this are replaced by 'static. However, a recent addition to Miri checks that references passed to functions are valid during the entire execution of the function, even when those references are passed inside a...

Ouroboros is Unsound

Summary Ouroboros has a soundness problem, but a fix has been implemented in 0.16.0. More details: In 0.15.0, Ouroboros works internally by creating a struct where all uses of 'this are replaced by 'static. However, a recent addition to Miri checks that references passed to functions are valid...

RUSTSEC-2023-0042 Ouroboros is Unsound

Summary Ouroboros has a soundness problem, but a fix has been implemented in 0.16.0. More details: In 0.15.0, Ouroboros works internally by creating a struct where all uses of 'this are replaced by 'static. However, a recent addition to Miri checks that references passed to functions are valid...

GHSA-F67M-9J94-QV9J Parser creates invalid uninitialized value

Affected versions of this crate called mem::uninitialized in the HTTP1 parser to create values of type httparse::Header from the httparse crate. This is unsound, since Header contains references and thus must be non-null. The flaw was corrected by avoiding the use of mem::uninitialized, using...

Parser creates invalid uninitialized value

Affected versions of this crate called mem::uninitialized in the HTTP1 parser to create values of type httparse::Header from the httparse crate. This is unsound, since Header contains references and thus must be non-null. The flaw was corrected by avoiding the use of mem::uninitialized, using...

`SegQueue` creates zero value of any type

Affected versions of this crate called mem::zeroed to create values of a user-supplied type T. This is unsound e.g. if T is a reference type which must be non-null. The flaw was corrected by avoiding the use of mem::zeroed, using MaybeUninit instead...

GHSA-8GJ8-HV75-GP94 `SegQueue` creates zero value of any type

Affected versions of this crate called mem::zeroed to create values of a user-supplied type T. This is unsound e.g. if T is a reference type which must be non-null. The flaw was corrected by avoiding the use of mem::zeroed, using MaybeUninit instead...

`SegQueue` creates zero value of any type

Affected versions of this crate called mem::zeroed to create values of a user-supplied type T. This is unsound e.g. if T is a reference type which must be non-null. The flaw was corrected by avoiding the use of mem::zeroed, using MaybeUninit instead...

GHSA-6888-WF7J-34JQ `SegQueue` creates zero value of any type

Affected versions of this crate called mem::zeroed to create values of a user-supplied type T. This is unsound e.g. if T is a reference type which must be non-null. The flaw was corrected by avoiding the use of mem::zeroed, using MaybeUninit instead...

GHSA-9G55-PG62-M8HH Channel creates zero value of any type

Affected versions of this crate called mem::zeroed to create values of a user-supplied type T. This is unsound e.g. if T is a reference type which must be non-null. The flaw was corrected by avoiding the use of mem::zeroed, using MaybeUninit instead...