CVE-2016-9939 · cross-distro fix matrix

CVE-2016-9939: Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine. The library will allocate a memory block based on the length field of the ASN.1 object. If there is not enough content octets in the ASN.1 object, then the function will fail and the memory block will be

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-9939 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libcrypto++→ fixed in5.6.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libcrypto++
```

Debian bookworm

Source: Debian Security Tracker

libcrypto++→ fixed in5.6.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libcrypto++
```

Debian trixie

Source: Debian Security Tracker

libcrypto++→ fixed in5.6.4-5urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libcrypto++
```

Are YOU affected by CVE-2016-9939?

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

CVE-2016-9939dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)