Fixed
Created: Sep 16, 2019
Updated: Apr 22, 2022
Resolved Date: Oct 14, 2019
Found In Version: 10.18.44.1
Fix Version: 10.18.44.11
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Kernel
In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. 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 MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.
CREATE(Triage):(User=admin) CVE-2019-15031 (https://nvd.nist.gov/vuln/detail/CVE-2019-15031)
