Affected versions of rgb crate allow viewing and modifying data of any type
T wrapped in
RGB<T> as bytes,
and do not correctly constrain
RGB<T> and other wrapper structures to the types for which it is safe to do so.
Safety violation possible for a type wrapped in
RGB<T> and similar wrapper structures:
T contains padding, viewing it as bytes may lead to exposure of contents of uninitialized memory.
T contains a pointer, modifying it as bytes may lead to dereferencing of arbitrary pointers.
- Any safety and/or validity invariants for
T may be violated.
The issue was resolved by requiring all types wrapped in structures provided by RGB crate to implement an unsafe marker trait.