CVE-2021-21191: Use after free in WebRTC

Reference Links

• https://security-tracker.debian.org/tracker/CVE-2021-21191
• https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_12.html (Advisory)
• https://crbug.com/1167357
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/
• https://security.gentoo.org/glsa/202104-08
• https://www.debian.org/security/2021/dsa-4886
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ/

Parent vulnerabilities

(Appears in the following advisories)

• 5280375550425303743

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-21192
• CVE-2021-21193

Frequently Asked Questions

• What is CVE-2021-21191?

  CVE-2021-21191 is a vulnerability in WebRTC in Google Chrome that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page.

• How can CVE-2021-21191 affect me?

  CVE-2021-21191 can potentially allow a remote attacker to exploit heap corruption in Google Chrome.

• What is the severity of CVE-2021-21191?

  The severity of CVE-2021-21191 is not specified in the provided information.

• How do I fix CVE-2021-21191?

  To fix CVE-2021-21191, update to Google Chrome version 89.0.4389.90 or later.

• Where can I find more information about CVE-2021-21191?

  More information about CVE-2021-21191 can be found on the Debian security tracker: https://security-tracker.debian.org/tracker/CVE-2021-21191