CVE-2019-15030

A flaw in the Linux kernel on the PowerPC platform, was found where a local user can read vector registers of other user processes (via a Facility Unavailable exception). An attacker must start a transaction when the FPU operation begins or there is no leakage. Vector registers will become corrupted with values from the different local Linux processes, because of the missing check inside arch/powerpc/kernel/process.c. The highest threat from this vulnerability is confidentiality of data and availability of the system.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

When applicable rely on FPU emulation (for example by rebuilding the critical services code) instead of the hardware FPU.