Description
Integer overflow in the authentication_agent_new_cookie function in PolicyKit (aka polkit) before 0.113 allows local users to gain privileges by creating a large number of connections, which triggers the issuance of a duplicate cookie value.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | policykit-1 | 0.105-12 | — |
| Debian 13 | policykit-1 | 0.105-12 | — |
| Debian 12 | policykit-1 | 0.105-12 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | policykit-1 | 0.105-20ubuntu0.18.04.1 | USN-3717-1 |
| Ubuntu 16.04 LTS | policykit-1 | 0.105-14.1ubuntu0.1 | USN-3717-1 |
| Ubuntu 14.04 LTS | policykit-1 | 0.105-4ubuntu3.14.04.2 | USN-3717-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | polkit | 0.113-4.1 | SUSE-SU-2015:1838-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | polkit | 0.113-4.1 | SUSE-SU-2015:1838-1 |
Advisories 2
- USN-3717-1 policykit-1 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2015:1838-1 Security update for polkit SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [polkit-devel] 20150603 Agent Authentication Question mailing-list
- 75267 vdb-entry
- FEDORA-2015-11058 vendor-advisory
- openSUSE-SU-2015:1927 vendor-advisory
- FEDORA-2015-11743 vendor-advisory
- [polkit-devel] 20150702 polkit-0.113 released mailing-list
- [oss-security] 20150609 Re: CVE request for polkit mailing-list
- openSUSE-SU-2015:1734 vendor-advisory
- [oss-security] 20150608 CVE request for polkit mailing-list
- [polkit-devel] 20150529 Agent Authentication Question mailing-list
- [oss-security] 20150616 Re: CVE request for polkit mailing-list
- 1035023 vdb-entry