Deserializer::read_vec() created an uninitialized buffer and passes it to a user-provided
Read implementation (
Passing an uninitialized buffer to an arbitrary
Read implementation is currently defined as undefined behavior in Rust. Official documentation for the
Read trait explains the following: “It is your responsibility to make sure that buf is initialized before calling read. Calling read with an uninitialized buf (of the kind one obtains via MaybeUninit) is not safe, and can lead to undefined behavior."
The flaw was corrected in commit ce310f7 by zero-initializing the newly allocated buffer before handing it to