| Name | CVE-2019-6133 |
| Description | In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1644-1, DLA-1799-1, ELA-127-1 |
| Debian Bugs | 918985 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | fixed |
| stretch (security) | 4.9.320-2 | fixed |
| stretch (lts), stretch | 4.9.320-3 | fixed |
| buster (security), buster, buster (lts) | 4.19.316-1 | fixed |
| bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.226-1 | fixed |
| bookworm | 6.1.115-1 | fixed |
| bookworm (security) | 6.1.119-1 | fixed |
| trixie | 6.12.5-1 | fixed |
| sid | 6.12.6-1 | fixed |
| policykit-1 (PTS) | jessie, jessie (lts) | 0.105-15~deb8u5 | fixed |
| stretch (security), stretch (lts), stretch | 0.105-18+deb9u2 | vulnerable |
| buster (security), buster, buster (lts) | 0.105-25+deb10u1 | fixed |
| bullseye (security), bullseye | 0.105-31+deb11u1 | fixed |
| bookworm | 122-3 | fixed |
| sid, trixie | 125-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - policykit-1 <no-dsa> (Minor issue, kernel mitigation will land in next 4.9.x rebase)
https://bugs.chromium.org/p/project-zero/issues/detail?id=1692
https://gitlab.freedesktop.org/polkit/polkit/merge_requests/19
https://gitlab.freedesktop.org/polkit/polkit/commit/c898fdf4b1aafaa04f8ada9d73d77c8bb76e2f81
Issue can be mitigated in kernel with
https://git.kernel.org/linus/7b55851367136b1efd84d98fea81ba57a98304cf (landed in 4.9.150)