StackPatch is live — CVE patch ops for indie SaaS, $99 lifetime founder seat (50 only).See product

Back to CVE digest

CVE-2021-21193 · cross-distro fix matrix

CVE-2021-21193: Use after free in Blink in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Affects 8 Linux releases across 12 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-21193 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

chromium→ fixed in89.0.4389.90-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y chromium
```

Debian bookworm

Source: Debian Security Tracker

chromium→ fixed in89.0.4389.90-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y chromium
```

Debian trixie

Source: Debian Security Tracker

chromium→ fixed in89.0.4389.90-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y chromium
```

Alpine v3.20

Source: Alpine secdb

chromium→ fixed in89.0.4389.90-r0

apk update && apk add --upgrade chromium

qt5-qtwebengine→ fixed in5.15.3_git20200401-r0
```
apk update && apk add --upgrade qt5-qtwebengine
```

Alpine v3.21

Source: Alpine secdb

chromium→ fixed in89.0.4389.90-r0

apk update && apk add --upgrade chromium

qt5-qtwebengine→ fixed in5.15.3_git20200401-r0
```
apk update && apk add --upgrade qt5-qtwebengine
```

Alpine edge

Source: Alpine secdb

chromium→ fixed in89.0.4389.90-r0

apk update && apk add --upgrade chromium

Alpine v3.18

Source: Alpine secdb

chromium→ fixed in89.0.4389.90-r0

apk update && apk add --upgrade chromium

qt5-qtwebengine→ fixed in5.15.3_git20200401-r0
```
apk update && apk add --upgrade qt5-qtwebengine
```

Alpine v3.19

Source: Alpine secdb

chromium→ fixed in89.0.4389.90-r0

apk update && apk add --upgrade chromium

qt5-qtwebengine→ fixed in5.15.3_git20200401-r0
```
apk update && apk add --upgrade qt5-qtwebengine
```

Are YOU affected by CVE-2021-21193?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2021-21193dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)