CVE-2021-43305 · cross-distro fix matrix

CVE-2021-43305: Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don’t exceed the destination buffer’s limi

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-43305 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

clickhouse→ fixed in18.16.1+ds-7.2+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y clickhouse
```

Debian bookworm

Source: Debian Security Tracker

clickhouse→ fixed in18.16.1+ds-7.3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y clickhouse
```

Are YOU affected by CVE-2021-43305?

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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