Reported

December 21, 2021

Issued

December 21, 2021 (last modified: June 13, 2023)

Package

lru (crates.io)

Type

Vulnerability

Categories

• memory-corruption

Keywords

#use-after-free

Aliases

• CVE-2021-45720
• GHSA-qqmc-hwqp-8g2w
• GHSA-v362-2895-h9r2

References

• https://github.com/jeromefroe/lru-rs/issues/120

Patched

• >=0.7.1

Affected Functions

Version

lru::LruCache::iter

• <0.7.1

lru::LruCache::iter_mut

• <0.7.1

Description

Lru crate has use after free vulnerability.

Lru crate has two functions for getting an iterator. Both iterators give references to key and value. Calling specific functions, like pop(), will remove and free the value, and but it's still possible to access the reference of value which is already dropped causing use after free.

Advisory available under CC0-1.0 license.