Description
An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended access restriction for snaps which plugs any of pulseaudio, audio-playback or audio-record via unloading the pulseaudio snap policy module. This issue affects: pulseaudio 1:8.0 versions prior to 1:8.0-0ubuntu3.12; 1:11.1 versions prior to 1:11.1-1ubuntu7.7; 1:13.0 versions prior to 1:13.0-1ubuntu1.2; 1:13.99.1 versions prior to 1:13.99.1-1ubuntu3.2;
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | pulseaudio | 1:8.0 – < 1:8.0-0ubuntu3.12, 1:11.1 – < 1:11.1-1ubuntu7.7, 1:13.0 – < 1:13.0-1ubuntu1.2, 1:13.99.1 – < 1:13.99.1-1ubuntu3.2 | 1:8.0-0ubuntu3.12 |
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | pulseaudio | 1:13.99.1-1ubuntu3.2 | USN-4355-1 |
| Ubuntu 18.04 LTS | pulseaudio | 1:11.1-1ubuntu7.7 | USN-4355-1 |
| Ubuntu 16.04 LTS | pulseaudio | 1:8.0-0ubuntu3.12 | USN-4355-1 |
Advisories 1
- USN-4355-1 pulseaudio vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026