CVE-2019-13351: Alsa-Project Alsa

High severity, CVSS 8.1. EPSS: 1.7% chance of exploitation in the next 30 days.

posix/JackSocket.cpp in libjack in JACK2 1.9.1 through 1.9.12 (as distributed with alsa-plugins 1.1.7 and later) has a "double file descriptor close" issue during a failed connection attempt when jackd2 is not running. Exploitation success depends on multithreaded timing of that double close, which can result in unintended information disclosure, crashes, or file corruption due to having the wrong file associated with the file descriptor.

Affected products

• Alsa-Project Alsa: up to and including 1.1.7
• Jackaudio JACK2: from 1.9.1, up to and including 1.9.12

Published 2019-07-05. Last modified 2026-06-17.