LOW
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.
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
http://www.openwall.com/lists/oss-security/2019/09/10/4
https://security.netapp.com/advisory/ntap-20191004-0001/
Source: MITRE
Published: 2019-09-13
Updated: 2020-01-23
Type: CWE-200
Base Score: 3.6
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 4.4
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
Impact Score: 2.5
Exploitability Score: 1.8
Severity: MEDIUM