CVE-2016-6321 · cross-distro fix matrix

CVE-2016-6321: Directory traversal vulnerability in the safer_name_suffix function in GNU tar 1.14 through 1.29 might allow remote attackers to bypass an intended protection mechanism and write to arbitrary files via vectors related to improper sanitization of the file_name parameter, aka POINTYFEATHER.

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-6321 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

tar→ fixed in1.29b-1.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tar
```

Debian bookworm

Source: Debian Security Tracker

tar→ fixed in1.29b-1.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tar
```

Debian trixie

Source: Debian Security Tracker

tar→ fixed in1.29b-1.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tar
```

Alpine v3.20

Source: Alpine secdb

tar→ fixed in1.29-r1
```
apk update && apk add --upgrade tar
```

Alpine v3.21

Source: Alpine secdb

tar→ fixed in1.29-r1
```
apk update && apk add --upgrade tar
```

Alpine edge

Source: Alpine secdb

tar→ fixed in1.29-r1
```
apk update && apk add --upgrade tar
```

Alpine v3.18

Source: Alpine secdb

tar→ fixed in1.29-r1
```
apk update && apk add --upgrade tar
```

Alpine v3.19

Source: Alpine secdb

tar→ fixed in1.29-r1
```
apk update && apk add --upgrade tar
```

Are YOU affected by CVE-2016-6321?

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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