CVE-2021-3478 · cross-distro fix matrix

CVE-2021-3478: There's a flaw in OpenEXR's scanline input file functionality in versions before 3.0.0-beta. An attacker able to submit a crafted file to be processed by OpenEXR could consume excessive system memory. The greatest impact of this flaw is to system availability.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-3478 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

openexr→ fixed in2.5.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openexr
```

Debian bookworm

Source: Debian Security Tracker

openexr→ fixed in2.5.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openexr
```

Debian trixie

Source: Debian Security Tracker

openexr→ fixed in2.5.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openexr
```

Alpine v3.20

Source: Alpine secdb

openexr→ fixed in2.5.4-r0
```
apk update && apk add --upgrade openexr
```

Alpine v3.21

Source: Alpine secdb

openexr→ fixed in2.5.4-r0
```
apk update && apk add --upgrade openexr
```

Alpine edge

Source: Alpine secdb

openexr→ fixed in2.5.4-r0
```
apk update && apk add --upgrade openexr
```

Alpine v3.18

Source: Alpine secdb

openexr→ fixed in2.5.4-r0
```
apk update && apk add --upgrade openexr
```

Alpine v3.19

Source: Alpine secdb

openexr→ fixed in2.5.4-r0
```
apk update && apk add --upgrade openexr
```

Are YOU affected by CVE-2021-3478?

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

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