python-apt: NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cau...
CVE-2025-6966 is fixed in 15 products on 1 platform, first by python-apt 1.6.6ubuntu0.1~esm1, released December 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| apt · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-apidoc · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-debuginfo · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-debugsource · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-devel · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-doc · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-libs · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-libs-debuginfo · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-utils · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| apt-utils-debuginfo · Fedora 43 | 3.1.15-2.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| python-apt · Debian 11.6 (bullseye) | 2.2.1.1 | DLA-4408-1 | Dec 16, 2025 |
| python-apt · Debian 14 | 3.1.0 | DEBIAN-CVE-2025-6966 | Dec 5, 2025 |
| python-apt · Fedora 43 | 3.1.0-1.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| python-apt · Ubuntu 18.04.6 LTS (bionic) | 1.6.6ubuntu0.1~esm1 | python-apt 1.6.6ubuntu0.1~esm1 | Dec 4, 2025 |
| python-apt · Ubuntu 20.04 LTS (focal) | 2.0.1ubuntu0.20.04.1+esm1 | python-apt 2.0.1ubuntu0.20.04.1+esm1 | Dec 4, 2025 |
| python-apt-common · Ubuntu 18.04.6 LTS (bionic) | 1.6.6ubuntu0.1~esm1 | python-apt-common 1.6.6ubuntu0.1~esm1 | Dec 4, 2025 |
| python-apt-common · Ubuntu 20.04 LTS (focal) | 2.0.1ubuntu0.20.04.1+esm1 | python-apt-common 2.0.1ubuntu0.20.04.1+esm1 | Dec 4, 2025 |
| python-apt-common · Ubuntu 22.04.1 LTS (jammy) | 2.4.0ubuntu4.1 | python-apt-common 2.4.0ubuntu4.1 | Dec 4, 2025 |
| python-apt-common · Ubuntu 24.04.5 LTS (noble) | 2.7.7ubuntu5.1 | python-apt-common 2.7.7ubuntu5.1 | Dec 4, 2025 |
| python-apt-common · Ubuntu 25.10 (questing) | 3.0.0ubuntu1.1 | python-apt-common 3.0.0ubuntu1.1 | Dec 4, 2025 |
| python-apt-debugsource · Fedora 43 | 3.1.0-1.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| python3-apt · Fedora 43 | 3.1.0-1.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
| python3-apt · Ubuntu 18.04.6 LTS (bionic) | 1.6.6ubuntu0.1~esm1 | python3-apt 1.6.6ubuntu0.1~esm1 | Dec 4, 2025 |
| python3-apt · Ubuntu 20.04 LTS (focal) | 2.0.1ubuntu0.20.04.1+esm1 | python3-apt 2.0.1ubuntu0.20.04.1+esm1 | Dec 4, 2025 |
| python3-apt · Ubuntu 22.04.1 LTS (jammy) | 2.4.0ubuntu4.1 | python3-apt 2.4.0ubuntu4.1 | Dec 4, 2025 |
| python3-apt · Ubuntu 24.04.5 LTS (noble) | 2.7.7ubuntu5.1 | python3-apt 2.7.7ubuntu5.1 | Dec 4, 2025 |
| python3-apt · Ubuntu 25.10 (questing) | 3.0.0ubuntu1.1 | python3-apt 3.0.0ubuntu1.1 | Dec 4, 2025 |
| python3-apt-debuginfo · Fedora 43 | 3.1.0-1.fc43 | FEDORA-2026-1C47E433DF | Feb 16, 2026 |
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