← All notices | Source (USN-8762-1) | Text version

QSN-8762-1: polkit vulnerability

September 15, 2026

Summary

polkit could be made to crash or run programs as an administrator.

Details

It was discovered that polkit incorrectly handled cookie input. A local attacker could possibly use this issue to cause polkit to crash, resulting in a denial of service, or execute arbitrary code.

Affected QuantaStor releases

ReleasePlatformPackageExposureShipped versionFixed versionStatus
6.9.1.001Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.1.001Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.1.001Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.1.001Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.1.001Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.20.105-33ubuntu0.2Fixed in this release
6.8.6.015Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.6.015Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.5.018Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSlibpolkit-agent-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSlibpolkit-gobject-1-0Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSpkexecInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSpolicykit-1Internally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSpolkitdInternally-facing0.105-33ubuntu0.10.105-33ubuntu0.2Fixed by QuantaStor security update

Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.

CVEs

CVE-2026-85498

References

https://ubuntu.com/security/notices/USN-8762-1

https://nvd.nist.gov/vuln/detail/CVE-2026-85498

Update

Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:

PlatformPackageVersion
Ubuntu 22.04 LTSpolicykit-10.105-33ubuntu0.2
Ubuntu 24.04 LTSpolicykit-1124-2ubuntu1.24.04.4
resolutepolicykit-1127-2ubuntu1.1