CVE-2020-8252 · cross-distro fix matrix

CVE-2020-8252: The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.

Affects 8 Linux releases across 13 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-8252 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libuv1→ fixed in1.39.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y libuv1

Debian bookworm

Source: Debian Security Tracker

libuv1→ fixed in1.39.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y libuv1

Debian trixie

Source: Debian Security Tracker

libuv1→ fixed in1.39.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y libuv1

Alpine v3.20

Source: Alpine secdb

libuv→ fixed in1.39.0-r0
```
apk update && apk add --upgrade libuv
```
nodejs→ fixed in12.18.4-r0
```
apk update && apk add --upgrade nodejs
```

Alpine v3.21

Source: Alpine secdb

libuv→ fixed in1.39.0-r0
```
apk update && apk add --upgrade libuv
```
nodejs→ fixed in12.18.4-r0
```
apk update && apk add --upgrade nodejs
```

Alpine edge

Source: Alpine secdb

libuv→ fixed in1.39.0-r0
```
apk update && apk add --upgrade libuv
```
nodejs→ fixed in12.18.4-r0
```
apk update && apk add --upgrade nodejs
```

Alpine v3.18

Source: Alpine secdb

libuv→ fixed in1.39.0-r0
```
apk update && apk add --upgrade libuv
```
nodejs→ fixed in12.18.4-r0
```
apk update && apk add --upgrade nodejs
```

Alpine v3.19

Source: Alpine secdb

libuv→ fixed in1.39.0-r0
```
apk update && apk add --upgrade libuv
```
nodejs→ fixed in12.18.4-r0
```
apk update && apk add --upgrade nodejs
```

Are YOU affected by CVE-2020-8252?

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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