CVE-2023-29491 · cross-distro fix matrix

CVE-2023-29491: ncurses before 6.4 20230408, when used by a setuid application, allows local users to trigger security-relevant memory corruption via malformed data in a terminfo database file that is found in $HOME/.terminfo or reached via the TERMINFO or TERM environment variable.

Affects 7 Linux releases across 7 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2023-29491 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

ncurses→ fixed in6.2+20201114-2+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ncurses
```

Debian bookworm

Source: Debian Security Tracker

ncurses→ fixed in6.4-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ncurses
```

Debian trixie

Source: Debian Security Tracker

ncurses→ fixed in6.4-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y ncurses
```

Alpine v3.20

Source: Alpine secdb

ncurses→ fixed in6.4_p20230424-r0
```
apk update && apk add --upgrade ncurses
```

Alpine v3.21

Source: Alpine secdb

ncurses→ fixed in6.4_p20230424-r0
```
apk update && apk add --upgrade ncurses
```

Alpine edge

Source: Alpine secdb

ncurses→ fixed in6.4_p20230424-r0
```
apk update && apk add --upgrade ncurses
```

Alpine v3.19

Source: Alpine secdb

ncurses→ fixed in6.4_p20230424-r0
```
apk update && apk add --upgrade ncurses
```

Are YOU affected by CVE-2023-29491?

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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