CVE-2021-33450 · cross-distro fix matrix

CVE-2021-33450: Daisy Chen discovered that NASM was vulnerable to a heap buffer overflow

Affects 2 Linux releases across 2 (distro × package) combinations. First disclosed: 2026-05-07.

Fix per ecosystem

Each block below is a distro release where CVE-2021-33450 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

nasm→ fixed in2.15.05-1ubuntu0.1~esm1USN-8248-1
```
sudo apt-get install --only-upgrade -y nasm
```

Ubuntu noble

Source: Ubuntu USN

nasm→ fixed in2.16.01-1ubuntu0.1~esm1USN-8248-1
```
sudo apt-get install --only-upgrade -y nasm
```

Are YOU affected by CVE-2021-33450?

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-2021-33450dropped 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)