CVE-2025-6966
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Ubuntu Python-apt
PublishedDec 5, 2025
First seenDec 5, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- ubuntu python-apt0.9.3.11, 1.6.6, 2.0.1, 2.7.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ubuntu python-apt | v < 0.9.3.11, 1.6.0 ≤ v < 1.6.6, 2.0.0 ≤ v < 2.0.1, 2.7.0 ≤ v < 2.7.7, 0.9.3.5, 0.9.3.11, 1.1.0, 1.6.6, 2.0.1, 2.4.0, 2.7.7, 3.0.0 | 0.9.3.11, 1.6.6, 2.0.1, 2.7.7 |
| debian debian_linux | 11.0 | — |
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