CVE-2021-38501 · cross-distro fix matrix

CVE-2021-38501: security advisory

Affects 5 Linux releases across 17 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-38501 has a known fix. Run the listed command on that distro to remediate.

Alpine v3.20

Source: Alpine secdb

firefox-esr→ fixed in91.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in93.0-r0
```
apk update && apk add --upgrade firefox
```

thunderbird→ fixed in91.3.2-r0

apk update && apk add --upgrade thunderbird

Alpine v3.21

Source: Alpine secdb

firefox-esr→ fixed in91.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in93.0-r0
```
apk update && apk add --upgrade firefox
```

librewolf→ fixed in93.0-r0

apk update && apk add --upgrade librewolf

thunderbird→ fixed in91.3.2-r0

apk update && apk add --upgrade thunderbird

Alpine edge

Source: Alpine secdb

firefox-esr→ fixed in91.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in93.0-r0
```
apk update && apk add --upgrade firefox
```

librewolf→ fixed in93.0-r0

apk update && apk add --upgrade librewolf

thunderbird→ fixed in91.3.2-r0

apk update && apk add --upgrade thunderbird

Alpine v3.18

Source: Alpine secdb

firefox-esr→ fixed in91.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in93.0-r0
```
apk update && apk add --upgrade firefox
```

thunderbird→ fixed in91.3.2-r0

apk update && apk add --upgrade thunderbird

Alpine v3.19

Source: Alpine secdb

firefox-esr→ fixed in91.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in93.0-r0
```
apk update && apk add --upgrade firefox
```

thunderbird→ fixed in91.3.2-r0

apk update && apk add --upgrade thunderbird

Are YOU affected by CVE-2021-38501?

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-2021-38501dropped 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.

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