GHSA-h6xm-c6r4-vmwf
Unsound usages of `u8` type casting in spl-token-swap
The library provides a safe public API unpack to cast u8 array to arbitrary types, which can cause to undefined behaviors. The length check of array can only prevent out-of-bound access on the return type. However, it can't prevent misaligned pointer when casting u8 pointer to a type aligned to larger bytes. For example, if we assign u16 to T, misaligned raw pointer dereference could happen and cause to panic. Even if we pass the type aligned to same byte as u8 (e.g., bool), it could construct a illegal type since bool can only have 0 or 1 as bit patterns, which is also an undefined behavior. The further exploits of the bug here are still not clear, so we would report this issue as unsound.
The details of PoC to reproduce undefined behavior are provided in the issue.
What each source reports
GitHub AdvisoriesNo score
Unsound usages of `u8` type casting in spl-token-swap
The library provides a safe public API unpack to cast u8 array to arbitrary types, which can cause to undefined behaviors. The length check of array can only prevent out-of-bound access on the return type. However, it can't prevent misaligned pointer when casting u8 pointer to a type aligned to larger bytes. For example, if we assign u16 to T, misaligned raw pointer dereference could happen and cause to panic. Even if we pass the type aligned to same byte as u8 (e.g., bool), it could construct a illegal type since bool can only have 0 or 1 as bit patterns, which is also an undefined behavior. The further exploits of the bug here are still not clear, so we would report this issue as unsound.
The details of PoC to reproduce undefined behavior are provided in the issue.
- Record
GHSA-h6xm-c6r4-vmwf- Updated
- 2026-11-02
OSVNo score
Unsound usages of `u8` type casting in spl-token-swap
The library provides a safe public API unpack to cast u8 array to arbitrary types, which can cause to undefined behaviors. The length check of array can only prevent out-of-bound access on the return type. However, it can't prevent misaligned pointer when casting u8 pointer to a type aligned to larger bytes. For example, if we assign u16 to T, misaligned raw pointer dereference could happen and cause to panic. Even if we pass the type aligned to same byte as u8 (e.g., bool), it could construct a illegal type since bool can only have 0 or 1 as bit patterns, which is also an undefined behavior. The further exploits of the bug here are still not clear, so we would report this issue as unsound.
The details of PoC to reproduce undefined behavior are provided in the issue.
- Record
GHSA-h6xm-c6r4-vmwf- Updated
- 2026-11-02
OSVRUSTSEC-2024-0426No score
Unsound usages of `u8` type casting
The library provides a safe public API unpack to cast u8 array to arbitrary types, which can cause to undefined behaviors. The length check of array can only prevent out-of-bound access on the return type. However, it can't prevent misaligned pointer when casting u8 pointer to a type aligned to larger bytes. For example, if we assign u16 to T, misaligned raw pointer dereference could happen and cause to panic. Even if we pass the type aligned to same byte as u8 (e.g., bool), it could construct a illegal type since bool can only have 0 or 1 as bit patterns, which is also an undefined behavior. The further exploits of the bug here are still not clear, so we would report this issue as unsound.
The details of PoC to reproduce undefined behavior are provided in the issue.
- Record
RUSTSEC-2024-0426- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
spl-token-swapcrates.io | through 3.0.0 | None known |
spl-token-swapcrates.io | 0.0.0-0 and later | None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-h6xm-c6r4-vmwf is a vulnerability with no CVSS score yet in spl-token-swap, published December 19, 2024. No source lists public exploit code. No source names a fixed version.