CVE-2026-6477 · cross-distro fix matrix

CVE-2026-6477: Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets(), PQfn(..., result_is_int=0, ...) st

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2026-6477 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

postgresql-15→ fixed in15.18-0+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postgresql-15
```

Debian trixie

Source: Debian Security Tracker

postgresql-17→ fixed in17.10-0+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y postgresql-17
```

Are YOU affected by CVE-2026-6477?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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