CVE-2025-6966

Null-pointer dereference in python-apt TagSection.keys()

State: Published
Severity: 6.9 Medium
Published: Dec 5, 2025
Updated: Dec 15, 2025
Reserved: Jul 1, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	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	canonical

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
python-aptCanonical	3.0 to before 3.0.0ubuntu1.1Affected 3.0 to before 3.0.0ubuntu0.25.04.1Affected 2.7 to before 2.7.7ubuntu5.1Affected 2.4 to before 2.4.0ubuntu4.1Affected 2.0 to before 2.0.1ubuntu0.20.04.1+esm1Affected 1.6 to before 1.6.6ubuntu0.1~esm1Affected 1.1 to before 1.1.0~beta1ubuntu0.16.04.12+esm1Affected before 0.9.3.5ubuntu3+esm5Affected

References

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