CVE-2026-4424 · cross-distro fix matrix

CVE-2026-4424: It was discovered that libarchive incorrectly handled certain RAR

Affects 11 Linux releases across 39 (distro × package) combinations. First disclosed: 2026-05-21.

Fix per ecosystem

Each block below is a distro release where CVE-2026-4424 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

libarchive→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive
```
bsdcpio→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdcpio
```
bsdtar→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdtar
```
libarchive-dev→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-dev
```
libarchive-tools→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-tools
```
libarchive13→ fixed in3.2.2-3.1ubuntu0.7+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive13
```

Ubuntu focal

Source: Ubuntu USN

libarchive→ fixed in3.4.0-2ubuntu1.5+esm2USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive
```
libarchive-dev→ fixed in3.4.0-2ubuntu1.5+esm2USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-dev
```
libarchive-tools→ fixed in3.4.0-2ubuntu1.5+esm2USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-tools
```
libarchive13→ fixed in3.4.0-2ubuntu1.5+esm2USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive13
```

Ubuntu jammy

Source: Ubuntu USN

libarchive→ fixed in3.6.0-1ubuntu1.7USN-8292-1

sudo apt-get install --only-upgrade -y libarchive

libarchive-dev→ fixed in3.6.0-1ubuntu1.7USN-8292-1

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

libarchive-tools→ fixed in3.6.0-1ubuntu1.7USN-8292-1

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

libarchive13→ fixed in3.6.0-1ubuntu1.7USN-8292-1

sudo apt-get install --only-upgrade -y libarchive13

Ubuntu noble

Source: Ubuntu USN

libarchive→ fixed in3.7.2-2ubuntu0.7USN-8292-1

sudo apt-get install --only-upgrade -y libarchive

libarchive-dev→ fixed in3.7.2-2ubuntu0.7USN-8292-1

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

libarchive-tools→ fixed in3.7.2-2ubuntu0.7USN-8292-1

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

libarchive13t64→ fixed in3.7.2-2ubuntu0.7USN-8292-1

sudo apt-get install --only-upgrade -y libarchive13t64

Ubuntu questing

Source: Ubuntu USN

libarchive→ fixed in3.7.7-0ubuntu3.2USN-8292-1

sudo apt-get install --only-upgrade -y libarchive

libarchive-dev→ fixed in3.7.7-0ubuntu3.2USN-8292-1

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

libarchive-tools→ fixed in3.7.7-0ubuntu3.2USN-8292-1

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

libarchive13t64→ fixed in3.7.7-0ubuntu3.2USN-8292-1

sudo apt-get install --only-upgrade -y libarchive13t64

Ubuntu resolute

Source: Ubuntu USN

libarchive→ fixed in3.8.5-1ubuntu2.1USN-8292-1

sudo apt-get install --only-upgrade -y libarchive

libarchive-dev→ fixed in3.8.5-1ubuntu2.1USN-8292-1

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

libarchive-tools→ fixed in3.8.5-1ubuntu2.1USN-8292-1

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

libarchive13t64→ fixed in3.8.5-1ubuntu2.1USN-8292-1

sudo apt-get install --only-upgrade -y libarchive13t64

Ubuntu trusty

Source: Ubuntu USN

libarchive→ fixed in3.1.2-7ubuntu2.8+esm5USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive
```
bsdcpio→ fixed in3.1.2-7ubuntu2.8+esm5USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdcpio
```
bsdtar→ fixed in3.1.2-7ubuntu2.8+esm5USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdtar
```
libarchive-dev→ fixed in3.1.2-7ubuntu2.8+esm5USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-dev
```
libarchive13→ fixed in3.1.2-7ubuntu2.8+esm5USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive13
```

Ubuntu xenial

Source: Ubuntu USN

libarchive→ fixed in3.1.2-11ubuntu0.16.04.8+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive
```
bsdcpio→ fixed in3.1.2-11ubuntu0.16.04.8+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdcpio
```
bsdtar→ fixed in3.1.2-11ubuntu0.16.04.8+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y bsdtar
```
libarchive-dev→ fixed in3.1.2-11ubuntu0.16.04.8+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive-dev
```
libarchive13→ fixed in3.1.2-11ubuntu0.16.04.8+esm3USN-8292-1
```
sudo apt-get install --only-upgrade -y libarchive13
```

Debian bullseye

Source: Debian Security Tracker

libarchive→ fixed in3.4.3-2+deb11u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libarchive
```

Debian bookworm

Source: Debian Security Tracker

libarchive→ fixed in3.6.2-1+deb12u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libarchive
```

Debian trixie

Source: Debian Security Tracker

libarchive→ fixed in3.7.4-4+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libarchive
```

Are YOU affected by CVE-2026-4424?

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-2026-4424dropped 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. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)