CVE-2021-20266 · cross-distro fix matrix

CVE-2021-20266: A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability 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-2021-20266 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

rpm→ fixed in4.16.1.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rpm
```

Debian bookworm

Source: Debian Security Tracker

rpm→ fixed in4.16.1.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rpm
```

Debian trixie

Source: Debian Security Tracker

rpm→ fixed in4.16.1.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y rpm
```

Alpine v3.20

Source: Alpine secdb

rpm→ fixed in4.16.1.3-r0
```
apk update && apk add --upgrade rpm
```

Alpine v3.21

Source: Alpine secdb

rpm→ fixed in4.16.1.3-r0
```
apk update && apk add --upgrade rpm
```

Alpine edge

Source: Alpine secdb

rpm→ fixed in4.16.1.3-r0
```
apk update && apk add --upgrade rpm
```

Alpine v3.18

Source: Alpine secdb

rpm→ fixed in4.16.1.3-r0
```
apk update && apk add --upgrade rpm
```

Alpine v3.19

Source: Alpine secdb

rpm→ fixed in4.16.1.3-r0
```
apk update && apk add --upgrade rpm
```

Are YOU affected by CVE-2021-20266?

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

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