CVE-2016-4569: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

The snd_timer_user_params function in sound/core/timer.c in the Linux kernel through 4.6 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.10 only; version 16.04 only
• Linux Linux Kernel: up to and including 4.6
• Novell Suse Linux Enterprise Debuginfo: version 11.0 only
• Novell Suse Linux Enterprise Desktop: version 12.0 only
• Novell Suse Linux Enterprise Live Patching: version 12.0 only
• Novell Suse Linux Enterprise Module For Public Cloud: version 12.0 only
• Novell Suse Linux Enterprise Real Time Extension: version 12.0 only
• Novell Suse Linux Enterprise Server: version 11.0 only; version 12.0 only
• Novell Suse Linux Enterprise Software Development Kit: version 11.0 only; version 12.0 only
• Novell Suse Linux Enterprise Workstation Extension: version 12.0 only

Published 2016-05-23. Last modified 2026-06-17.