Debian CVE-2026-2219
HIGHCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionNVD
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).
AnalysisAI
dpkg-deb fails to properly validate zstd-compressed .deb archives during decompression, allowing unauthenticated remote attackers to trigger infinite loops that exhaust CPU resources on Debian systems. This denial of service condition affects the package management system without requiring user interaction or elevated privileges. …
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RemediationAI
Within 24 hours: Inventory all systems running dpkg and assess exposure to untrusted package sources. Within 7 days: Implement network controls to restrict package installation sources to trusted, validated repositories and disable zstd compression support in dpkg if operationally feasible. …
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