CVE-2020-15706 · cross-distro fix matrix

CVE-2020-15706: GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 v

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-15706 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

grub2→ fixed in2.04-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y grub2
```

Debian bookworm

Source: Debian Security Tracker

grub2→ fixed in2.04-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y grub2
```

Debian trixie

Source: Debian Security Tracker

grub2→ fixed in2.04-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y grub2
```

Alpine v3.20

Source: Alpine secdb

grub→ fixed in2.06-r0
```
apk update && apk add --upgrade grub
```

Alpine v3.21

Source: Alpine secdb

grub→ fixed in2.06-r0
```
apk update && apk add --upgrade grub
```

Alpine edge

Source: Alpine secdb

grub→ fixed in2.06-r0
```
apk update && apk add --upgrade grub
```

Alpine v3.18

Source: Alpine secdb

grub→ fixed in2.06-r0
```
apk update && apk add --upgrade grub
```

Alpine v3.19

Source: Alpine secdb

grub→ fixed in2.06-r0
```
apk update && apk add --upgrade grub
```

Are YOU affected by CVE-2020-15706?

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

CVE-2020-15706dropped 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. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)