RUSTSEC-2021-0049

through and through_and causes a double free if the map function panics

Issued
Package
through (crates.io)
Type
Vulnerability
Categories
  • memory-corruption
Aliases
Details
https://github.com/gretchenfrage/through/issues/1
CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Patched
no patched versions
Keywords
  • memory-safety
  • double-free

Description

through and through_and take a mutable reference as well as a mapping function to change the provided reference. They do this by calling ptr::read on the reference which duplicates ownership and then calling the mapping function.

If the mapping function panics, both the original object and the one duplicated by ptr::read get dropped, causing a double free.

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