Packages
- policykit-1 - framework for managing administrative policies and privileges
Details
It was discovered that polkit incorrectly handled nested elements in XML
policy files. If an administrator were tricked into installing a malicious
policy file, a remote attacker could possibly use this issue to cause
polkit to crash, resulting in a denial of service. (CVE-2025-7519)
Pavel Kohout discovered that the polkit polkit-agent-helper-1 utility
incorrectly handled long input. A local attacker could possibly use this
issue to cause polkit to crash, resulting in a denial of service.
(CVE-2026-4897)
It was discovered that polkit incorrectly handled nested elements in XML
policy files. If an administrator were tricked into installing a malicious
policy file, a remote attacker could possibly use this issue to cause
polkit to crash, resulting in a denial of service. (CVE-2025-7519)
Pavel Kohout discovered that the polkit polkit-agent-helper-1 utility
incorrectly handled long input. A local attacker could possibly use this
issue to cause polkit to crash, resulting in a denial of service.
(CVE-2026-4897)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 25.10 questing | polkitd – 126-2ubuntu0.1 | ||
| 24.04 LTS noble | policykit-1 – 124-2ubuntu1.24.04.3 | ||
| 22.04 LTS jammy | policykit-1 – 0.105-33ubuntu0.1 | ||
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