CVE-2021-30549 Use after free in Chrome

What is CVE-2021-30549?

CVE-2021-30549 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 15 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Use after free in Spell check in Google Chrome prior to 91.0.4472.101 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.

Weakness: CWE-416

Which versions are affected by CVE-2021-30549?

It affects 2 products.

Products include Fedoraproject Fedora, Google Chrome.

How do I fix CVE-2021-30549?

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-2021-30549 being exploited?

There is no known exploitation of CVE-2021-30549 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 CLEANSTART-2024-EQ04487, DEBIAN-CVE-2021-30549, GHSA-2jfr-2v34-hr95, UBUNTU-CVE-2021-30549.