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CVE-2020-15257 · cross-distro fix matrix

CVE-2020-15257: containerd is an industry-standard container runtime and is available as a daemon for Linux and Windows. In containerd before versions 1.3.9 and 1.4.3, the containerd-shim API is improperly exposed to host network containers. Access controls for the shim’s API socket verified that the connecting pro

Affects 8 Linux releases across 21 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-15257 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

containerd→ fixed in1.4.3~ds1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y containerd
```
docker.io→ fixed in20.10.0~rc1+dfsg2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y docker.io
```

Debian bookworm

Source: Debian Security Tracker

containerd→ fixed in1.4.3~ds1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y containerd
```
docker.io→ fixed in20.10.0~rc1+dfsg2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y docker.io
```

Debian trixie

Source: Debian Security Tracker

containerd→ fixed in1.4.3~ds1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y containerd
```
docker.io→ fixed in20.10.0~rc1+dfsg2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y docker.io
```

Alpine v3.20

Source: Alpine secdb

containerd→ fixed in1.4.3-r0

apk update && apk add --upgrade containerd

docker→ fixed in19.03.14-r0
```
apk update && apk add --upgrade docker
```
k3s→ fixed in1.19.4.2-r0
```
apk update && apk add --upgrade k3s
```

Alpine v3.21

Source: Alpine secdb

containerd→ fixed in1.4.3-r0

apk update && apk add --upgrade containerd

docker→ fixed in19.03.14-r0
```
apk update && apk add --upgrade docker
```
k3s→ fixed in1.19.4.2-r0
```
apk update && apk add --upgrade k3s
```

Alpine edge

Source: Alpine secdb

containerd→ fixed in1.4.3-r0

apk update && apk add --upgrade containerd

docker→ fixed in19.03.14-r0
```
apk update && apk add --upgrade docker
```
k3s→ fixed in1.19.4.2-r0
```
apk update && apk add --upgrade k3s
```

Alpine v3.18

Source: Alpine secdb

containerd→ fixed in1.4.3-r0

apk update && apk add --upgrade containerd

docker→ fixed in19.03.14-r0
```
apk update && apk add --upgrade docker
```
k3s→ fixed in1.19.4.2-r0
```
apk update && apk add --upgrade k3s
```

Alpine v3.19

Source: Alpine secdb

containerd→ fixed in1.4.3-r0

apk update && apk add --upgrade containerd

docker→ fixed in19.03.14-r0
```
apk update && apk add --upgrade docker
```
k3s→ fixed in1.19.4.2-r0
```
apk update && apk add --upgrade k3s
```

Are YOU affected by CVE-2020-15257?

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

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Continuous monitoring beats manual checking

CVE-2020-15257dropped 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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