CVE-2021-42613 Use after free in n/a

What is CVE-2021-42613?

CVE-2021-42613 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 double free in cleanup_index in index.c in Halibut 1.2 allows an attacker to cause a denial of service or possibly have other unspecified impact via a crafted text document.

Weakness: CWE-415

Which versions are affected by CVE-2021-42613?

It affects 2 products.

Products include Fedoraproject Fedora, Halibut Project Halibut.

How do I fix CVE-2021-42613?

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-2021-42613 being exploited?

There is no known exploitation of CVE-2021-42613 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-42613, GHSA-69m6-42x6-85hc, UBUNTU-CVE-2021-42613.