What’s Vulnerable › Vulnerabilities
CVE-2021-21157
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 9.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-02-22 · updated 2026-06-17
- Weakness: CWE-416
Description
Use after free in Web Sockets in Google Chrome on Linux prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected products
- Fedoraproject Fedora: 32, 33
- Google Chrome: before 88.0.4324.182 — fixed in 88.0.4324.182
- Microsoft Edge: before 88.0.705.74 — fixed in 88.0.705.74
- Microsoft Edge (Chromium): before 88.0.4324.182 — fixed in 88.0.4324.182
- Google Chrome: before 88.0.4324.182 — fixed in 88.0.4324.182
How to fix
Upgrade to a fixed version: Google Chrome 88.0.4324.182; Microsoft Edge 88.0.705.74; Microsoft Edge (Chromium) 88.0.4324.182; Google Chrome 88.0.4324.182. Check the vendor advisory for mitigations.
References
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
- https://crbug.com/1170657
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
- https://security.gentoo.org/glsa/202104-08
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
- https://crbug.com/1170657
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
- https://security.gentoo.org/glsa/202104-08
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