USN-8173-1 policykit-1 vulnerabilities

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...

UBUNTU-CVE-2026-4897

A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the polkit-agent-helper-1 setuid binary via standard input stdin. This unbounded input can lead to an out-of-memory OOM condition, resulting in a Denial of Service DoS for the...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000242)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000242 advisory. In the Linux kernel before 5.1.17, ptracelink in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship,...