RUSTSEC-2020-0106

Queues allow non-Send types to be sent to other threads, allowing data races

Reported

December 19, 2020

Issued

January 20, 2021 (last modified: June 13, 2023)

Package

multiqueue2 (crates.io)

Type

INFO Unsound

Categories

Aliases

References

https://github.com/abbychau/multiqueue2/issues/10

CVSS Score

5.9 MEDIUM

CVSS Details

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: High

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Patched

>=0.1.7

Description

Affected versions of this crate unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>).

This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.

The flaw was corrected in v0.1.7 by adding T: Send bound to to the Send impl of four data types explained above.

Advisory available under CC0-1.0 license.