CVE-2020-36208

High

An issue was discovered in the conquer-once crate before 0.3.2 for Rust. Thread crossing can occur for a non-Send but Sync type, leading to…

mitre·CWE-662·Published 2021-01-22

CVSS

7.8

EPSS

0.00

KEV

Exploits

cve.orgen

158 chars

An issue was discovered in the conquer-once crate before 0.3.2 for Rust. Thread crossing can occur for a non-Send but Sync type, leading to memory corruption.

NVDen

158 chars

An issue was discovered in the conquer-once crate before 0.3.2 for Rust. Thread crossing can occur for a non-Send but Sync type, leading to memory corruption.

Affected versions of `conquer-once` implements `Sync` for its `OnceCell` type without restricting it to `Send`able types. This allows non-`Send` but `Sync` types such as `MutexGuard` to be sent across threads leading to undefined behavior and memory corruption in concurrent programs. The issue was fixed by adding a `Send` constraint to `OnceCell`.

GHSAen

333 chars

Affected versions of conquer-once implements Sync for its OnceCell type without restricting it to Sendable types. This allows non-Send but Sync types such as MutexGuard to be sent across threads leading to undefined behavior and memory corruption in concurrent programs. The issue was fixed by adding a Send constraint to OnceCell.

NVDes

209 chars

Se detectó un problema en la crate conquer-once versiones anteriores a 0.3.2 para Rust. Un cruce de subprocesos puede ocurrir para un non-Send pero de tipo Sync, conllevando a una corrupción de la memoria

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	4.6	3.9	6.4	AV:L/AC:L/Au:N/C:P/I:P/A:P
3.1	Primary	NVD	7.8	1.8	5.9	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1	Secondary	GHSA	7.8	—	—	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H