CVE-2021-30574: Use after free in protocol handling

Reference Links

• https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop_20.html (Advisory)
• https://crbug.com/1227315
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6/

Parent vulnerabilities

(Appears in the following advisories)

• 4605650058444101231

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-30565
• CVE-2021-30566
• CVE-2021-30567
• CVE-2021-30568
• CVE-2021-30569
• CVE-2021-30571
• CVE-2021-30572
• CVE-2021-30573
• CVE-2021-4320
• CVE-2021-30575
• CVE-2021-30576
• CVE-2021-30577
• CVE-2021-30578
• CVE-2021-30579
• CVE-2021-30580
• CVE-2021-30581
• CVE-2021-30582
• CVE-2021-30583
• CVE-2021-30584
• CVE-2021-30585
• CVE-2021-30586
• CVE-2021-30587
• CVE-2021-30588
• CVE-2021-30589

Frequently Asked Questions

• What is CVE-2021-30574?

  CVE-2021-30574 is a vulnerability in Google Chrome prior to version 92.0.4515.107 that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page.

• How can a remote attacker exploit CVE-2021-30574?

  A remote attacker can potentially exploit CVE-2021-30574 by using a crafted HTML page to trigger a use after free vulnerability in the protocol handling of Google Chrome, leading to potential heap corruption.

• What is the severity of CVE-2021-30574?

  CVE-2021-30574 has a severity rating of 8.8 (high).

• Which software versions are affected by CVE-2021-30574?

  Google Chrome versions prior to 92.0.4515.107, Fedora 33, Fedora 34, and Fedora 35 are affected by CVE-2021-30574.

• How can I fix CVE-2021-30574?

  To fix CVE-2021-30574, update your Google Chrome to version 92.0.4515.107 or newer. For Fedora users, apply the necessary security updates provided by the Fedora project.