GHSA-gv7f-5qqh-vxfx xous has unsound usages of `core::slice::from_raw_parts`
Unsound pointer casting in xous library allows memory corruption, 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-gv7f-5qqh-vxfx?
GHSA-gv7f-5qqh-vxfx is a memory corruption vulnerability in xous, published on 23 Dec 2024.
Official description
We consider as_slice and as_slice_mut unsound because: the pointer with any bit patterns could be cast to the slice of arbitrary types. The pointer could be created by unsafe new and deprecated from_parts. We consider that from_parts should be removed in latest version because it will help trigger unsoundness in as_slice. With new declared as unsafe, as_slice should also declared as unsafe.
This was patched in by marking two functions as unsafe.
Which versions are affected by GHSA-gv7f-5qqh-vxfx?
3 open source packages ship an affected version, including xous.
| Package | Affected | Fixed in |
|---|---|---|
xous crates.io | All versions | 0.9.51 |
xous crates.io | All versions | 0.9.51 |
xous crates.io | From 0.0.0-0 | 0.9.51 |
How do I fix GHSA-gv7f-5qqh-vxfx?
Upgrade xous to 0.9.51 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GHSA-gv7f-5qqh-vxfx being exploited?
There is no known exploitation of GHSA-gv7f-5qqh-vxfx in the wild and no public exploit code.
Sources
Also known as RUSTSEC-2024-0431.