{"id":"UBUNTU-CVE-2025-6966","details":"NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.","modified":"2026-02-04T02:48:06.187388Z","published":"2025-12-05T00:00:00Z","related":["USN-7916-1"],"upstream":["CVE-2025-6966"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-6966"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-6966"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7916-1"}],"affected":[{"package":{"name":"python-apt","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/python-apt@0.9.3.5ubuntu3+esm5?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.3.5ubuntu3+esm5"}]}],"versions":["0.8.9.1ubuntu1","0.9.0","0.9.1","0.9.1ubuntu1","0.9.3.2","0.9.3.2ubuntu2","0.9.3.3","0.9.3.3ubuntu1","0.9.3.4","0.9.3.4build1","0.9.3.5","0.9.3.5ubuntu1","0.9.3.5ubuntu2","0.9.3.5ubuntu3","0.9.3.5ubuntu3+esm2","0.9.3.5ubuntu3+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: 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