Vulnerability · Published Mar 7, 2026 · Assigned by debian
CVE-2026-2219
High 7.5
In plain English
A high-severity infinite loop in dpkg from Debian. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | dpkg | 0 | ALPINE-CVE-2026-2219 |
| Debian:12 | dpkg | 1.21.23 | DEBIAN-CVE-2026-2219 |
| Debian:13 | dpkg | 1.22.22 | DEBIAN-CVE-2026-2219 |
| Debian:14 | dpkg | 1.23.6 | DEBIAN-CVE-2026-2219 |
| Ubuntu:24.04:LTS | dpkg | 1.22.6ubuntu6.6 | USN-8249-1 |
| Ubuntu:24.04:LTS | dpkg | 1.22.6ubuntu6.6 | UBUNTU-CVE-2026-2219 |
| Ubuntu:25.10 | dpkg | 1.22.21ubuntu3.2 | UBUNTU-CVE-2026-2219 |
| Ubuntu:25.10 | dpkg | 1.22.21ubuntu3.2 | USN-8249-1 |
Affected products (as reported)
Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H