Detections
Analytics
CVE-2019-15031
medium
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.
References
https://usn.ubuntu.com/4135-2/
https://usn.ubuntu.com/4135-1/
https://security.netapp.com/advisory/ntap-20191004-0001/
http://www.openwall.com/lists/oss-security/2019/09/10/4
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html