Wind River Support Network

Description

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)

CVEs

• CVE-2019-15031