CVE-2021-31162: In the standard library in Rust before 1.52.0, a double free can occur in the Vec::from_iter function if freeing the element panics

Critical severity · published Apr 14, 2021

CVE-2021-31162

In the standard library in Rust before 1.52.0, a double free can occur in the Vec::from_iter function if freeing the element panics

9.8

CVSS

2.9%

EPSS

On KEV

Description

In the standard library in Rust before 1.52.0, a double free can occur in the Vec::from_iter function if freeing the element panics.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)2.9% · higher than 87% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Fedora · Fedoraproject

32; 33; 34 · source: NVD

Rust · Rust-lang

1.48.0 before 1.52.0 · source: NVD

Affected product

Fedora

Fedoraproject

All Fedora CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-31162

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-31162

Exploit

https://github.com/rust-lang/rust/issues/83618

Patch

https://github.com/rust-lang/rust/pull/83629

Patch

https://github.com/rust-lang/rust/pull/84603

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/