Race condition in Google Chromium - CVE-2026-6921

Vulnerability identifier: #VU127958

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-6921

CWE-ID: CWE-362

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to a race condition in GPU in Google Chrome. A remote attacker can trick the victim to open a specially crafted web page and bypass implemented security restrictions.

Google Chromium
Microsoft Edge
Google Chrome
Debian Linux
Fedora
chromium
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 147.0.7727.116
Microsoft Edge - update to 147.0.3912.86
Google Chrome - update to 147.0.7727.116
chromium - addressed in versions 147.0.7727.116-1.el9, 147.0.7727.116-1.el10_1, 147.0.7727.116-1.el10_2, 147.0.7727.116-1.el10_3, 147.0.7727.116-1.fc42, 147.0.7727.116-1.fc43, 147.0.7727.116-1.fc44
chromium (Debian package) - addressed in versions 147.0.7727.116-1~deb12u1, 147.0.7727.116-1~deb13u1

• https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_22.html
• https://crbug.com/493315759

• Multiple vulnerabilities in Google Chrome
• Multiple vulnerabilities in Microsoft Edge
• Fedora EPEL 10.1 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 44 update for chromium
• Fedora 43 update for chromium
• Fedora EPEL 10.3 update for chromium
• Fedora EPEL 10.2 update for chromium
• Fedora 42 update for chromium
• Debian update for chromium