CVE-2021-38002

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-23 · updated 2026-06-17
Weakness: CWE-416

Description

Use after free in Web Transport in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

Affected products

Debian Linux: 10.0, 11.0
Fedoraproject Fedora: 34
Google Chrome: before 95.0.4638.69 — fixed in 95.0.4638.69

How to fix

Upgrade to a fixed version: Google Chrome 95.0.4638.69. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
https://crbug.com/1260940
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
https://www.debian.org/security/2022/dsa-5046
https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
https://crbug.com/1260940
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
https://www.debian.org/security/2022/dsa-5046

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