Double Free in Rust-Lang Rust
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.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Rust-Lang Rust
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/rust-lang/rust/issues/83618 (Exploit, Third Party Advisory)
- github.com/rust-lang/rust/pull/83629 (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- github.com/rust-lang/rust/pull/84603 (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202210-09 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-31162?
- CVE-2021-31162 is a critical-severity vulnerability in Rust-Lang Rust, classified under Double Free. CVSS score: 9.8/10. Published 2021-04-14.
- How severe is CVE-2021-31162?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-31162 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.