CVE-2020-7039 · cross-distro fix matrix

CVE-2020-7039: tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code.

Affects 3 Linux releases across 9 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-7039 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libslirp→ fixed in4.1.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libslirp
```
qemu→ fixed in1:4.1-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
slirp→ fixed in1:1.0.17-10urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y slirp
```

Debian bookworm

Source: Debian Security Tracker

libslirp→ fixed in4.1.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libslirp
```
qemu→ fixed in1:4.1-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
slirp→ fixed in1:1.0.17-10urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y slirp
```

Debian trixie

Source: Debian Security Tracker

libslirp→ fixed in4.1.0-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libslirp
```
qemu→ fixed in1:4.1-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qemu
```
slirp→ fixed in1:1.0.17-10urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y slirp
```

Are YOU affected by CVE-2020-7039?

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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