CVE-2025-6297: Debian Dpkg

High severity, CVSS 8.2. EPSS: 0.4% chance of exploitation in the next 30 days.

It was discovered that dpkg-deb does not properly sanitize directory permissions when extracting a control member into a temporary directory, which is documented as being a safe operation even on untrusted data. This may result in leaving temporary files behind on cleanup. Given automated and repeated execution of dpkg-deb commands on adversarial .deb packages or with well compressible files, placed inside a directory with permissions not allowing removal by a non-root user, this can end up in a DoS scenario due to causing disk quota exhaustion or disk full conditions.

Affected products

• Debian Dpkg: before 1.22.21 (fixed in 1.22.21)

Published 2025-07-01. Last modified 2026-07-08.