CVE-2021-30549: Use after free in Spell check

Reference Links

• https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html (Advisory)
• https://crbug.com/1212498
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
• https://security.gentoo.org/glsa/202107-06
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/

Parent vulnerabilities

(Appears in the following advisories)

• 6244807684233791030

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-30544
• CVE-2021-30545
• CVE-2021-30546
• CVE-2021-30547
• CVE-2021-30548
• CVE-2021-30550
• CVE-2021-30551
• CVE-2021-30552
• CVE-2021-30553

Frequently Asked Questions

• What is the severity of CVE-2021-30549?

  CVE-2021-30549 has a high severity rating due to the potential for heap corruption and exploitation via malicious extensions.

• How do I fix CVE-2021-30549?

  To fix CVE-2021-30549, update Google Chrome to version 91.0.4472.101 or later.

• Which versions of Google Chrome are affected by CVE-2021-30549?

  Google Chrome versions prior to 91.0.4472.101 are affected by CVE-2021-30549.

• Can CVE-2021-30549 be exploited through malicious extensions?

  Yes, CVE-2021-30549 can be exploited if a user installs a malicious extension designed to trigger the vulnerability.

• What operating systems are impacted by CVE-2021-30549?

  CVE-2021-30549 impacts Google Chrome on various operating systems including Fedora 33 and 34.