cve/2019/CVE-2019-15031.md

### [CVE-2019-15031](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15031)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
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### 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.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a8318c13e79badb92bc6640704a64cc022a6eb97

#### Github
No PoCs found on GitHub currently.