CVE-2021-21112: Use after free in Blink

Reference Links

• https://security-tracker.debian.org/tracker/CVE-2021-21112
• https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html (Advisory)
• https://crbug.com/1151298
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN/
• https://security.gentoo.org/glsa/202101-05
• https://www.debian.org/security/2021/dsa-4832
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN/

Parent vulnerabilities

(Appears in the following advisories)

• 9088041325007791220

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-21106
• CVE-2021-21107
• CVE-2021-21108
• CVE-2021-21109
• CVE-2021-21110
• CVE-2021-21111
• CVE-2021-21113
• CVE-2020-16043
• CVE-2021-21114
• CVE-2020-15995
• CVE-2021-21115
• CVE-2021-21116

Frequently Asked Questions

• What is the severity of CVE-2021-21112?

  CVE-2021-21112 has a high severity due to its potential to allow a remote attacker to exploit heap corruption.

• How do I fix CVE-2021-21112?

  To fix CVE-2021-21112, update Google Chrome to version 87.0.4280.141 or later.

• Which versions of Google Chrome are affected by CVE-2021-21112?

  CVE-2021-21112 affects versions of Google Chrome prior to 87.0.4280.141.

• Can CVE-2021-21112 be exploited via email attachments?

  Yes, CVE-2021-21112 can potentially be exploited through crafted HTML pages, including those embedded in email attachments.

• Are there any recommended security practices related to CVE-2021-21112?

  It is recommended to keep all web browsers up to date and to avoid opening untrusted links or files.