CVE-2021-31162 Use after free in n/a
A double free vulnerability in the Rust standard library allows attackers to cause memory corruption and potential code execution via Vec::from_iter.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-31162?
CVE-2021-31162 is a critical use after free vulnerability in Fedoraproject Fedora, published on 14 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-415
Which versions are affected by CVE-2021-31162?
It affects 2 products.
Products include Fedoraproject Fedora, Rust-Lang Rust.
How do I fix CVE-2021-31162?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-31162 being exploited?
There is no known exploitation of CVE-2021-31162 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2021-31162, CLEANSTART-2026-YW17751, DEBIAN-CVE-2021-31162, GHSA-fjcw-72x2-rmmv, UBUNTU-CVE-2021-31162.