CVE-2021-46837 · cross-distro fix matrix

CVE-2021-46837: res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence

Affects 1 Linux release across 1 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-46837 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

asterisk→ fixed in1:16.28.0~dfsg-0+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y asterisk
```

Are YOU affected by CVE-2021-46837?

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

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