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Medium severity4.4NVD Advisory· Published Dec 4, 2020· Updated Jun 17, 2026

CVE-2020-16123

CVE-2020-16123

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.

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Affected products

6
  • Canonical/Ubuntu Linux4 versions
    cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*+ 3 more
    • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
    • cpe:2.3:o:canonical:ubuntu_linux:20.10:*:*:*:*:*:*:*
  • Canonical/pulseaudiov5
    Range: 1:13.99.3-1
  • Ubuntu/PulseAudiollm-create
    Range: 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, 1:8.0-0ubuntu3.15

Patches

Vulnerability mechanics

References

2

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0

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