CVE-2025-14831 · cross-distro fix matrix

CVE-2025-14831: A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-14831 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

gnutls28→ fixed in3.7.1-5+deb11u9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Debian bookworm

Source: Debian Security Tracker

gnutls28→ fixed in3.7.9-2+deb12u6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Debian trixie

Source: Debian Security Tracker

gnutls28→ fixed in3.8.9-3+deb13u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gnutls28
```

Are YOU affected by CVE-2025-14831?

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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