Ubuntu USN · USN-8249-1

dpkg vulnerability

Published: Thu, 07 May 2026 13:16

CVE-2026-2219

Summary

dpkg could be made to stop responding if it opened a specially crafted file.

Details

Yashashree Gund discovered that the dpkg dpkg-deb tool incorrectly handled certain zstd-compressed .deb archives. If a user or automated system were tricked into manipulating a specially crafted .deb archive, a remote attacker could possibly use this issue to cause dpkg-deb to stop responding, resulting in a denial of service.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu noble

dpkg→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dpkg→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dpkg-dev→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dselect→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dselect
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libdpkg-dev→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libdpkg-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libdpkg-perl→1.22.6ubuntu6.6apt_upgrade
Standard apt upgrade. Install 1.22.6ubuntu6.6 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libdpkg-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu questing

dpkg→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dpkg→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dpkg-dev→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dpkg-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dselect→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dselect
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libdpkg-dev→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libdpkg-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libdpkg-perl→1.22.21ubuntu3.2apt_upgrade
Standard apt upgrade. Install 1.22.21ubuntu3.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libdpkg-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8249-1?

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