# CVE-2019-13351: jackd2: posix/JackSocket.cpp in libjack in JACK2 1.9.1 through 1.9.12 (asdistributed with alsa-plugins 1.1.7 and later) has a...

CVE-2019-13351 is fixed in 3 products on 1 platform, first by jackd2 1.9.12~dfsg-2ubuntu2, released July 5, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-13351
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0169
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 5, 2019

## Description

posix/JackSocket.cpp in libjack in JACK2 1.9.1 through 1.9.12 (asdistributed with alsa-plugins 1.1.7 and later) has a "double filedescriptor close" issue during a failed connection attempt when jackd2 isnot running. Exploitation success depends on multithreaded timing of thatdouble close, which can result in unintended information disclosure,crashes, or file corruption due to having the wrong file associated withthe file descriptor.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jackd2 Ubuntu 20.04 LTS (focal) | 1.9.12~dfsg-2ubuntu2 | [jackd2 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-jackd2-1.9.12-dfsg-2ubuntu2.md) | Jul 5, 2019 |
| Linux | jackd2 Ubuntu 24.10 (oracular) | 1.9.12~dfsg-2ubuntu2 | [jackd2 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-jackd2-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |
| Linux | jackd2 Ubuntu 25.04 (plucky) | 1.9.12~dfsg-2ubuntu2 | [jackd2 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-jackd2-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |
| Linux | jackd2-firewire Ubuntu 20.04 LTS (focal) | 1.9.12~dfsg-2ubuntu2 | [jackd2-firewire 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-jackd2-firewire-1.9.12-dfsg-2ubuntu2.md) | Jul 5, 2019 |
| Linux | jackd2-firewire Ubuntu 24.10 (oracular) | 1.9.12~dfsg-2ubuntu2 | [jackd2-firewire 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-jackd2-firewire-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |
| Linux | jackd2-firewire Ubuntu 25.04 (plucky) | 1.9.12~dfsg-2ubuntu2 | [jackd2-firewire 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-jackd2-firewire-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |
| Linux | libjack-jackd2-0 Ubuntu 20.04 LTS (focal) | 1.9.12~dfsg-2ubuntu2 | [libjack-jackd2-0 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libjack-jackd2-0-1.9.12-dfsg-2ubuntu2.md) | Jul 5, 2019 |
| Linux | libjack-jackd2-0 Ubuntu 24.10 (oracular) | 1.9.12~dfsg-2ubuntu2 | [libjack-jackd2-0 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libjack-jackd2-0-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |
| Linux | libjack-jackd2-0 Ubuntu 25.04 (plucky) | 1.9.12~dfsg-2ubuntu2 | [libjack-jackd2-0 1.9.12~dfsg-2ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libjack-jackd2-0-1.9.12-dfsg-2ubuntu2.md) | Jan 16, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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