CVE-2026-33416 · cross-distro fix matrix

CVE-2026-33416: It was discovered that libpng incorrectly handled memory when processing

Affects 9 Linux releases across 18 (distro × package) combinations. First disclosed: 2026-05-07.

Fix per ecosystem

Each block below is a distro release where CVE-2026-33416 has a known fix. Run the listed command on that distro to remediate.

Ubuntu jammy

Source: Ubuntu USN

libpng1.6→ fixed in1.6.37-3ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng1.6

libpng-dev→ fixed in1.6.37-3ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng-dev

libpng-tools→ fixed in1.6.37-3ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng-tools

libpng16-16→ fixed in1.6.37-3ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng16-16

Ubuntu noble

Source: Ubuntu USN

libpng1.6→ fixed in1.6.43-5ubuntu0.6USN-8251-1

sudo apt-get install --only-upgrade -y libpng1.6

libpng-dev→ fixed in1.6.43-5ubuntu0.6USN-8251-1

sudo apt-get install --only-upgrade -y libpng-dev

libpng-tools→ fixed in1.6.43-5ubuntu0.6USN-8251-1

sudo apt-get install --only-upgrade -y libpng-tools

libpng16-16t64→ fixed in1.6.43-5ubuntu0.6USN-8251-1

sudo apt-get install --only-upgrade -y libpng16-16t64

Ubuntu questing

Source: Ubuntu USN

libpng1.6→ fixed in1.6.50-1ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng1.6

libpng-dev→ fixed in1.6.50-1ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng-dev

libpng-tools→ fixed in1.6.50-1ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng-tools

libpng16-16t64→ fixed in1.6.50-1ubuntu0.5USN-8251-1

sudo apt-get install --only-upgrade -y libpng16-16t64

Debian bullseye

Source: Debian Security Tracker

libpng1.6→ fixed in1.6.37-3+deb11u3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libpng1.6
```

Debian bookworm

Source: Debian Security Tracker

libpng1.6→ fixed in1.6.39-2+deb12u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libpng1.6
```

Debian trixie

Source: Debian Security Tracker

libpng1.6→ fixed in1.6.48-1+deb13u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libpng1.6
```

Alpine v3.20

Source: Alpine secdb

libpng→ fixed in1.6.56-r0
```
apk update && apk add --upgrade libpng
```

Alpine v3.21

Source: Alpine secdb

libpng→ fixed in1.6.56-r0
```
apk update && apk add --upgrade libpng
```

Alpine edge

Source: Alpine secdb

libpng→ fixed in1.6.56-r0
```
apk update && apk add --upgrade libpng
```

Are YOU affected by CVE-2026-33416?

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

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