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RUSTSEC-2021-0052

Multiple functions can cause double-frees

Reported
Issued
Package
id-map (crates.io)
Type
Vulnerability
Categories
Keywords
#memory-safety #double-free
Aliases
References
Patched
no patched versions

Description

The following functions in the crate are affected:

IdMap::clone_from

The clone_from implementation for IdMap drops the values present in the map and then begins cloning values from the other map. If a .clone() call pancics, then the afformentioned dropped elements can be freed again.

get_or_insert

get_or_insert reserves space for a value, before calling the user provided insertion function f. If the function f panics then uninitialized or previously freed memory can be dropped.

remove_set

When removing a set of elements, ptr::drop_in_place is called on each of the element to be removed. If the Drop impl of one of these elements panics then the previously dropped elements can be dropped again.

Advisory available under CC0-1.0 license.