zbus_polkit

PolicyKit zbus proxy

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Activity

Latest release: 2w ago
Total releases: 17
Cadence: ~3 months
Last 12 months: 1

Reach

Stars: 14

Details

License: MIT
First release: Jul 19, 2020

Releases

Version	Released
`5.1.0` minor	Aug 31, 2026
`5.0.0` unknown 1 CVE	Oct 21, 2024
`4.0.0` unknown 1 CVE	Feb 16, 2024
`3.0.1` unknown 1 CVE	May 12, 2023
`3.0.0` unknown 1 CVE	Sep 13, 2022
`2.0.2` unknown 1 CVE	May 10, 2022
`2.0.1` unknown 1 CVE	Jan 12, 2022
`2.0.0` unknown 1 CVE	Jan 03, 2022
`2.0.0-beta.8` unknown 1 CVE	Dec 27, 2021
`2.0.0-beta.7` unknown 1 CVE	Sep 29, 2021
`2.0.0-beta.6` unknown 1 CVE	Jul 30, 2021
`2.0.0-beta.5` unknown 1 CVE	Jun 16, 2021
`2.0.0-beta.4` unknown 1 CVE	Jun 12, 2021
`1.2.0` unknown 1 CVE	Dec 30, 2020
`1.1.0` unknown 1 CVE	Nov 10, 2020
`1.0.1` unknown 1 CVE	Jul 19, 2020
`1.0.0` unknown 1 CVE	Jul 19, 2020

Repository

z-galaxy/zbus_polkit

Forks: 5
Open issues: 1
Language: Rust

policykit
security
unix
zbus

Dependencies (7)

Depends on

5.1.0

Used by

Supply-chain exposure

7 tracked projects depend on this, <1% of every package we track.

A known CVE here directly exposes every one of them.

Known CVEs (1)

CVE-2026-78422 RUSTSEC-2026-0278 Aug 31, 2026

`zbus_polkit`: authorization bypass via PID reuse

Critical
Local Low Low None

Subject::new_for_owner() in the zbus_polkit crate encodes the uid entry of a unix-process polkit subject as an unsigned 32-bit integer (D-Bus type u), whereas the org.freedesktop.PolicyKit1.Authority interface specifies a signed 32-bit integer (D-Bus type i). Because of this type mismatch, polkit silently discards the caller-supplied UID and instead determines the subject's owner itself by looking up the PID in /proc, a lookup that is inherently subject to a time-of-check/time-of-use race.

Consequently, an application that passes a UID obtained from a trustworthy source — for example SO_PEERCRED Unix socket peer credentials — in order to defend against PID reuse receives no protection, and the supplied UID has no effect on the authorization decision. A local unprivileged attacker who can cause an authorized process to terminate and then win the race to have their own process assigned the same PID can be authorized under the identity of the terminated process, bypassing the polkit authorization check and performing actions the attacker is not entitled to.

This issue affects zbus_polkit before 5.1.0.

Fixed in

5.1.0

References

https://crates.io/crates/zbus_polkit
https://rustsec.org/advisories/RUSTSEC-2026-0278.html
https://github.com/z-galaxy/zbus_polkit/pull/101
https://bugzilla.suse.com/show_bug.cgi?id=1277659

Updated Sep 02, 2026 · Source: OSV.dev

Insights

Releases per month

last 12 months

Release mix

minor 1
unknown 16

17 releases

Dependencies over time

per release

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