CVE-2021-27347 · cross-distro fix matrix

CVE-2021-27347: Use after free in lzma_decompress_buf function in stream.c in Irzip 0.631 allows attackers to cause Denial of Service (DoS) via a crafted compressed file.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-27347 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

lrzip→ fixed in0.640-1urgency: unimportant

sudo apt-get install --only-upgrade -y lrzip

Debian bookworm

Source: Debian Security Tracker

lrzip→ fixed in0.640-1urgency: unimportant

sudo apt-get install --only-upgrade -y lrzip

Debian trixie

Source: Debian Security Tracker

lrzip→ fixed in0.640-1urgency: unimportant

sudo apt-get install --only-upgrade -y lrzip

Alpine v3.20

Source: Alpine secdb

lrzip→ fixed in0.640-r0
```
apk update && apk add --upgrade lrzip
```

Alpine v3.21

Source: Alpine secdb

lrzip→ fixed in0.640-r0
```
apk update && apk add --upgrade lrzip
```

Alpine edge

Source: Alpine secdb

lrzip→ fixed in0.640-r0
```
apk update && apk add --upgrade lrzip
```

Alpine v3.18

Source: Alpine secdb

lrzip→ fixed in0.640-r0
```
apk update && apk add --upgrade lrzip
```

Alpine v3.19

Source: Alpine secdb

lrzip→ fixed in0.640-r0
```
apk update && apk add --upgrade lrzip
```

Are YOU affected by CVE-2021-27347?

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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