CVE-2022-48303 · cross-distro fix matrix

CVE-2022-48303: GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace c

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

Fix per ecosystem

Each block below is a distro release where CVE-2022-48303 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

tar→ fixed in1.34+dfsg-1+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tar
```

Debian bookworm

Source: Debian Security Tracker

tar→ fixed in1.34+dfsg-1.2+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tar
```

Debian trixie

Source: Debian Security Tracker

tar→ fixed in1.34+dfsg-1.4urgency: unimportant
```
sudo apt-get install --only-upgrade -y tar
```

Alpine v3.20

Source: Alpine secdb

tar→ fixed in1.34-r2
```
apk update && apk add --upgrade tar
```

Alpine v3.21

Source: Alpine secdb

tar→ fixed in1.34-r2
```
apk update && apk add --upgrade tar
```

Alpine edge

Source: Alpine secdb

tar→ fixed in1.34-r2
```
apk update && apk add --upgrade tar
```

Alpine v3.18

Source: Alpine secdb

tar→ fixed in1.34-r2
```
apk update && apk add --upgrade tar
```

Alpine v3.19

Source: Alpine secdb

tar→ fixed in1.34-r2
```
apk update && apk add --upgrade tar
```

Are YOU affected by CVE-2022-48303?

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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