CVE-2021-42612 Use after free in n/a
A use-after-free flaw in Halibut allows attackers to cause a crash or potentially execute code via crafted documents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-42612?
CVE-2021-42612 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 24 May 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A use after free in cleanup_index in index.c in Halibut 1.2 allows an attacker to cause a segmentation fault or possibly have other unspecified impact via a crafted text document.
Weakness: CWE-416
Which versions are affected by CVE-2021-42612?
It affects 2 products.
Products include Fedoraproject Fedora, Halibut Project Halibut.
How do I fix CVE-2021-42612?
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-2021-42612 being exploited?
There is no known exploitation of CVE-2021-42612 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2021-42612, GHSA-wqhh-vh2p-v74x, UBUNTU-CVE-2021-42612.