CVE-2019-15030: Canonical Ubuntu Linux

Medium severity, CVSS 4.4. EPSS: 0.5% chance of exploitation in the next 30 days.

In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process because of a missing arch/powerpc/kernel/process.c check.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 19.04 only
• Linux Linux Kernel: up to and including 5.2.14
• Opensuse Leap: version 15.0 only; version 15.1 only
• Red Hat Enterprise Linux: version 7.0 only; version 8.0 only

Published 2019-09-13. Last modified 2026-06-17.