CVE-2020-14308 · cross-distro fix matrix

CVE-2020-14308: In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts durin

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

Fix per ecosystem

Each block below is a distro release where CVE-2020-14308 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-2020-14308?

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.

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