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.
CVSS Metrics
- 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Attack Vector
- local
- Complexity
- low
- Privileges
- none
- User Action
- none
- Confidentiality
- undefined
- Integrity
- undefined
- Availability
- undefined
- Weaknesses
- CWE-476
Metadata
- Primary Vendor
- UBUNTU
- Published
- 12/5/2025
- Last Modified
- 1/7/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
ubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptubuntu : python-aptdebian : debian_linux
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