GHSA-9fjq-45qv-pcm7 ruint affected by unsoundness of safe `reciprocal_mg10`
Attackers can trigger memory corruption in the ruint library via invalid inputs in release builds, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-9fjq-45qv-pcm7?
GHSA-9fjq-45qv-pcm7 is a memory corruption vulnerability in ruint, published on 22 Dec 2025.
Official description
The function reciprocal_mg10 is marked as safe but can trigger undefined behavior (out-of-bounds access) because it relies on debug_assert! for safety checks instead of assert!.
When compiled in release mode, the debug_assert! is optimized out, potentially allowing invalid inputs to cause memory corruption.
Which versions are affected by GHSA-9fjq-45qv-pcm7?
3 open source packages ship an affected version, including ruint.
| Package | Affected | Fixed in |
|---|---|---|
ruint crates.io | All versions to 1.17.0 | None |
ruint crates.io | All versions to 1.17.0 | None |
ruint crates.io | From 0.0.0-0 | 1.17.1 |
How do I fix GHSA-9fjq-45qv-pcm7?
Upgrade ruint to 1.17.1 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GHSA-9fjq-45qv-pcm7 being exploited?
There is no known exploitation of GHSA-9fjq-45qv-pcm7 in the wild and no public exploit code.
Sources
Also known as RUSTSEC-2025-0137.