| Name | CVE-2021-4115 |
| Description | There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1005784 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| policykit-1 (PTS) | jessie, jessie (lts) | 0.105-15~deb8u5 | fixed |
| stretch (security), stretch (lts), stretch | 0.105-18+deb9u2 | fixed |
| buster (security), buster, buster (lts) | 0.105-25+deb10u1 | fixed |
| bullseye (security), bullseye | 0.105-31+deb11u1 | vulnerable |
| bookworm | 122-3 | fixed |
| sid, trixie | 125-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - policykit-1 <no-dsa> (Minor issue)
[buster] - policykit-1 <not-affected> (Vulnerable code not present, patch introducing issue not backported)
[stretch] - policykit-1 <not-affected> (Vulnerable code not present, patch introducing issue not backported)
https://bugzilla.redhat.com/show_bug.cgi?id=2007534
https://securitylab.github.com/advisories/GHSL-2021-077-polkit/
Fixed by: https://gitlab.freedesktop.org/polkit/polkit/-/commit/41cb093f554da8772362654a128a84dd8a5542a7
https://gitlab.freedesktop.org/polkit/polkit/-/issues/141
Issue Upstream introduced in 0.113 with https://gitlab.freedesktop.org/polkit/polkit/-/commit/bfa5036bfb93582c5a87c44b847957479d911e38
Debian backported 0.113 commits in 0.105-26
[jessie] - policykit-1 <not-affected> (Vulnerable code not present, patch introducing issue not backported)