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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Canonical
  • Python-apt

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References
Link Providers
https://bugs.launchpad.net/ubuntu/+source/python-apt/+bug/2091865 cve-icon cve-icon
History

Tue, 09 Dec 2025 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Canonical
Canonical python-apt
Vendors & Products Canonical
Canonical python-apt

Mon, 08 Dec 2025 13:30:00 +0000

Type Values Removed Values Added
Description 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. 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.

Fri, 05 Dec 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 05 Dec 2025 13:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Null-pointer dereference in python-apt TagSection.keys()
Weaknesses CWE-476
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published: 2025-12-05T12:59:41.320Z

Updated: 2025-12-08T13:14:27.526Z

Reserved: 2025-07-01T09:59:55.552Z

Link: CVE-2025-6966

cve-icon Vulnrichment

Updated: 2025-12-05T14:01:34.435Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-05T13:16:05.220

Modified: 2025-12-08T18:26:49.133

Link: CVE-2025-6966

cve-icon Redhat

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