This bug was fixed in the package jackd2 - 1.9.12~dfsg-2ubuntu2
---------------
jackd2 (1.9.12~dfsg-2ubuntu2) focal; urgency=medium
* debian/patches/CVE-2019-13351.patch:
- Set fSocket to -1 after close on an error to prevent a double close,
fix CVE-2019-13351 (lp: #1833479)
-- Sebastien Bacher <seb...@ubuntu.com> Thu, 16 Apr 2020 10:21:43
+0200
** Changed in: jackd2 (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1833479
Title:
libjack-jackd2-0 double close on a failure to connect to jackd which
causes crashes in multithreaded programs
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