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USN-3934-1 Not scored

policykit-1 vulnerability

It was discovered that PolicyKit incorrectly relied on the fork() system call in the Linux kernel being atomic. A local attacker could possibly use this issue to gain access to services that have cached authorizations.

Exploit probability Not scored
Published April 3, 2019
Required by Not available
Last source change April 22, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:14.04:LTS policykit-1

7 explicit affected versions

Ubuntu:16.04:LTS policykit-1

7 explicit affected versions

Ubuntu:18.04:LTS policykit-1

4 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-3934-1

It was discovered that PolicyKit incorrectly relied on the fork() system call in the Linux kernel being atomic. A local attacker could possibly use this issue to gain access to services that have cached authorizations.

View original source

05 / REFERENCES

Further evidence