# CVE-2020-16123: libpulse0: An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a... CVE-2020-16123 is fixed in 14 products on 1 platform, first by libpulse-mainloop-glib0 1:11.1-1ubuntu7.11, released November 23, 2020. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2020-16123 - Priority: Routine - CVSS: n/a (Medium) - EPSS: 0.0032 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Nov 23, 2020 ## Description An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a client connection from a snap as coming from a snap if SCM_CREDENTIALS were missing, allowing the snap to connect to PulseAudio without proper confinement. This could be exploited by an attacker to expose sensitive information. Fixed in 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, and 1:8.0-0ubuntu3.15. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libpulse-mainloop-glib0 Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [libpulse-mainloop-glib0 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpulse-mainloop-glib0-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | libpulse-mainloop-glib0 Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [libpulse-mainloop-glib0 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpulse-mainloop-glib0-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | libpulse0 Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [libpulse0 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpulse0-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | libpulse0 Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [libpulse0 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpulse0-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | libpulsedsp Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [libpulsedsp 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libpulsedsp-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | libpulsedsp Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [libpulsedsp 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpulsedsp-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-equalizer Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-equalizer 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-equalizer-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-equalizer Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-equalizer 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-equalizer-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-esound-compat Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-esound-compat 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-esound-compat-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-bluetooth Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-bluetooth 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-bluetooth-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-bluetooth Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-bluetooth 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-bluetooth-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-module-gconf Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-gconf 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-gconf-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-gsettings Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-gsettings 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-gsettings-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-module-jack Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-jack 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-jack-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-jack Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-jack 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-jack-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-module-lirc Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-lirc 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-lirc-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-lirc Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-lirc 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-lirc-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-module-raop Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-raop 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-raop-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-raop Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-raop 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-raop-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-module-zeroconf Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-module-zeroconf 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-module-zeroconf-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-module-zeroconf Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-module-zeroconf 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-module-zeroconf-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | | Linux | pulseaudio-utils Ubuntu 18.04.6 LTS (bionic) | 1:11.1-1ubuntu7.11 | [pulseaudio-utils 1:11.1-1ubuntu7.11](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-pulseaudio-utils-1-11.1-1ubuntu7.11.md) | Nov 23, 2020 | | Linux | pulseaudio-utils Ubuntu 20.04 LTS (focal) | 1:13.99.1-1ubuntu3.8 | [pulseaudio-utils 1:13.99.1-1ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-focal-pulseaudio-utils-1-13.99.1-1ubuntu3.8.md) | Nov 23, 2020 | --- Data as of 2026-11-08T13:06:02Z UTC. 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