GHSA-66p5-j55p-32r9: smallvec creates uninitialized value of any type

August 25, 2021

Affected versions of this crate called mem::uninitialized() to create values of a user-supplied type T. This is unsound e.g. if T is a reference type (which must be non-null and thus may not remain uninitialized).

The flaw was corrected by avoiding the use of mem::uninitialized(), using MaybeUninit instead.

References

github.com/advisories/GHSA-66p5-j55p-32r9
github.com/servo/rust-smallvec
github.com/servo/rust-smallvec/issues/126
github.com/servo/rust-smallvec/pull/162
rustsec.org/advisories/RUSTSEC-2018-0018.html

Code Behaviors & Features

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