Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13bTh4LXBocDUtaHZxNs4AAx-c

Maligned causes incorrect deallocation

maligned::align_first manually allocates with an alignment larger than T, and then uses Vec::from_raw_parts on that allocation to get a Vec<T>.

GlobalAlloc::dealloc requires that the layout argument must be the same layout that was used to allocate that block of memory.

When deallocating, Box and Vec may not respect the specified alignment and can cause undefined behavior.

Permalink: https://github.com/advisories/GHSA-wm8x-php5-hvq6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13bTh4LXBocDUtaHZxNs4AAx-c
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 1 year ago
Updated: about 1 year ago

Identifiers: GHSA-wm8x-php5-hvq6
References:

• https://github.com/tylerhawkes/maligned/issues/5
• https://doc.rust-lang.org/std/alloc/trait.GlobalAlloc.html#tymethod.dealloc
• https://rustsec.org/advisories/RUSTSEC-2023-0017.html
• https://github.com/advisories/GHSA-wm8x-php5-hvq6

Repository: https://github.com/tylerhawkes/maligned
Blast Radius: 0.0

Affected Packages