CVE-2016-8740 · cross-distro fix matrix

CVE-2016-8740: The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-8740 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y apache2
```

Debian bookworm

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y apache2
```

Debian trixie

Source: Debian Security Tracker

apache2→ fixed in2.4.25-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y apache2
```

Are YOU affected by CVE-2016-8740?

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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